JP3980590B2 - Land data management system and network data verification system - Google Patents

Description

  The present invention relates to a land data management system for storing and managing land attributes of each land divided by a predetermined land boundary line in a predetermined area, and a node data representing a node in a virtual space and a link connecting the nodes. Storage means for storing network data including link data to be represented, network data editing means capable of editing the network data in units of map outlines, and editing at the boundary of the edit map outline edited by the network data editing means The present invention relates to a network data verification system provided with boundary consistency checking means for checking the consistency of the joint state between network data in the map and network data outside the edited map.

  In the local government, in order to collect property tax and inheritance tax, the business of evaluating land as property is performed. In particular, it is necessary to accurately identify the shape, area, etc. of the land, such as a brush, when performing the business of evaluating the land for such tax collection purposes. This certification work is basically carried out based on the public map provided at the registry office.

However, the official maps provided at the registry office may differ from the actual state of the brush (the current state) in the shape of each brush (position, length, etc. of the brush border drawn on the public map). is there. Also, there are many public notices that have been replaced with duplicates when lost or soiled. In this case, the replaced copy includes a trace of a public map created in the past (hereinafter also referred to as an “old public map”) and a copy of the old public map by a copying machine. There is a shift that occurs during tracing, and there is a distortion of the drawing that is caused by a difference in paper feed speed during image scanning or printing. In addition, some of the public maps have brush borders added or deleted without actual measurement when writing or dividing.
Therefore, there is a problem in that it is not always possible to accurately recognize the current state of each land by authorizing the shape and area of the land such as a brush based on the public map.

In addition, when accrediting the shape and area of the brush accurately, the Law 17 Map (Registration Office in Article 17 of the Real Estate Registration Act) is drawn with the position of the brush border line closer to the current state than the official map. Map) that is supposed to be prepared for.
However, in the Law Article 17 map, there are many things in which waterways (so-called blue line sections), village roads (so-called red line sections), etc. are not drawn as legal or non-legal public objects. Therefore, in the land authorization based on the Law Article 17 map, there is a problem that the existing waterway and village road may not be reflected.
In addition, the Law Article 17 map includes not only maps generated based on measured values surveyed (investigated) with high accuracy, such as maps stipulated in Article 2, Paragraph 6 of the National Land Survey Law, but also surveying. This includes maps with ambiguous stroke lines, such as drawings (location diagrams and maps specified by the Legal Affairs Bureau) that are supposed to be prepared in the registry for areas that have not been completed. Therefore, even if the Law Article 17 map is used instead of a public map, it is difficult to identify land that matches the current situation.

Here, Patent Document 1 uses a plurality of maps including the above-mentioned public maps and Law Article 17 maps, and supplements each other with information that is deficient or inaccurate in each map, and is more current. A technique for creating an accurate map close to is described.
The map data output system described in Patent Document 1 is based on a standard map data based on a public map, an old public map, or a law Article 17 map, a map attached to a land ledger, , Information such as each border line with reference map data created from the map based on the land readjustment registration order, such as each border line information is displayed on the display part and shifted greatly from each other, etc. Can be corrected by the operator (Patent Document 1, paragraphs 0033-0036).
In this way, the difference between a plurality of maps is complemented, and “edited map data” closer to the current state can be obtained.

  In the map data output system described in Patent Document 1, “edited map data” is given to vector data that can specify a stroke line and areas (brushes) partitioned by line segments corresponding to each vector data. And a lot number information that can identify the lot number being recorded, is recorded in a polygon image format (paragraph 0021 of Patent Document 1).

  Furthermore, the map data output system described in Patent Document 1 makes it possible to specify the creation time of the base map used in the generation of “edited map data” that is close to the current state, so that each stroke from past to present can be specified. The state can be displayed (or printed) in time series. Thereby, it is supposed that it is possible to specify how each brush is treated for each period (paragraph 0042 of Patent Document 1).

JP 2004-191466 A

By the way, as mentioned above, it is necessary to accurately recognize the stroke line that specifies the position and shape of the brush, especially in the evaluation of land for the purpose of collecting property taxes etc. The evaluation of the land greatly depends not only on the position and shape of the brush, but also on the texture and use of the brush, the route in contact with the brush, and the like.
In addition, the texture of the brush, the purpose of use, and the route that touches it are not necessarily one for each brush. For example, a single brush may contain multiple textures, The boundary line (use boundary line) may cross.

  Patent Document 1 described above describes that the map data output system can also be applied to handle boundary lines other than the brush boundary line (Patent Document 1, paragraph 0008 later stage), but not only the brush boundary line but also the ground boundary line. There is no disclosure of technology for managing various land boundaries such as application boundaries and routes “simultaneously”.

  And, if the map data output system described in Patent Document 1 is operated so as to handle various land boundary lines at the same time, as described above, the region partitioned by the vector data corresponding to the land boundary lines is recorded in the polygon image format. There is a problem that it is necessary to generate a plurality of polygon image data for each type of land boundary line for the same region.

For example, as shown in FIG. 22, if there is a land Y of the residential land Y (outlined portion) and a land Z of the agricultural land Z (blacked out portion) in the land W at the address 101 and the land X at the address 102, respectively. Four polygon image data representing the land attributes 101, 102, residential land, and farmland are required. If there are a plurality of polygon image data for the same area as described above, for example, when the boundary line of the land W is edited and changed, another polygon image corresponding to the texture Y is also added. The handling of the data becomes very complicated, such as the necessity to change the data shape.
Furthermore, as described above, in order to record the creation time of the map data that is the basis of each edited portion of the “edited map data”, each time a change is made, new polygon image data having a different shape due to the change is recorded. It has to be generated and stored as a record together with all past polygon image data, and the number and capacity of polygon image data to be accumulated increases, and the handling of the data becomes more complicated.

  Moreover, in the map data output system described in Patent Document 1, network data including vector data and the like are edited in units of predetermined outlines. Here, when the operator edits the vector data of a certain outline, for example, the vector data divided at the boundary of the outline is shifted at the boundary due to an operation mistake at the time of editing by the operator. There is a problem that there is a possibility that the consistency of the vector data at the boundary of the outline may not be achieved, for example, the vector data inside the outline and the vector data outside the outline are not joined.

  In order to solve the above problems, the inventor of the present application is not only a border line, but also a border line that is a boundary line of the earth, a use boundary line that is a boundary line of land use, an administrative boundary line such as a municipality boundary, and a route, etc. The present invention was completed by earnestly researching a system that can simultaneously manage various land boundaries. That is, an object of the present invention is to provide a land data management system capable of managing data by simple processing even when handling land data including a plurality of types of land boundaries. Furthermore, when the network data is edited in units of a predetermined edit map, the network that can check the consistency of the connection state between the network data in the edit map and the network data outside the edit map at the boundary of the edit map To provide a data review system.

The land data management system according to the present invention has the following configuration in order to solve the above problems. That is, a land data management system for storing and managing land attributes of each land divided by a predetermined land boundary line in a predetermined area, node data representing a node corresponding to the position of each intersection of the land boundary line, It represents a link corresponding to each land boundary line connecting the intersections, and has end point data for identifying nodes at both end points, and link data including land attribute data representing land attributes of each land in contact with both sides of the land boundary line. Storage means for storing network data divided into a plurality of map areas obtained by dividing the predetermined area , and a land attribute representing the specific land attribute when recognizing a range of land having the specific land attribute Link data representing the link that is continuous with each other at the end point represented by each end point data, and having the data as land attribute data of the land that touches one side, The range surrounded by the links extracted link data represents, recognizing land recognition means as the range of the land with the particular land attributes, the network data, and the network data editing means editable FIG Guo units A temporary node generating means for generating a temporary node at a dividing point of each link data divided by the boundary of the edited map outline in the edited map outline edited by the network data editing means, and adjacent to the boundary A temporary link generating means for adding, as link data belonging to the edited map outline, temporary link generation means for adding a link data representing a node and a temporary link connecting the temporary nodes, and for inspection surrounding the edited map outline from the predetermined area Each link that is divided at the boundary between the inspection contour extracting means for extracting the contour and the network data in the inspection contour with the edited contour. Link data representing inspection temporary nodes generating means for generating inspection temporary nodes and inspection temporary links connecting the nodes adjacent to the boundary and the inspection temporary nodes at the dividing point; Inspection temporary link generation means to be added as link data belonging to the inspection contour, position information of each temporary link belonging to the editing contour, and position information of each inspection temporary link belonging to the inspection contour by comparison, in the boundary, characterized by comprising a boundary alignment checking means for checking the integrity of the bonding state of the network data edit view outside Guo and network data editing Figure Kakunai.
According to which this, as well as a editable network data edit view Guo units, the network data after editing, cutting position of the link data at the boundary of the editing view Guo, an editing view Guo outside network data integrity It is possible to inspect whether or not Further, the range of the land divided by the land boundary line is recognized based on the land attribute data included in the link data by the land recognizing means without using the polygon image data directly expressing the position and shape of the land.

Furthermore, each link data can include a plurality of types of land attribute data corresponding to a plurality of types of land boundary lines that overlap at the same position, and the land recognition means determines a range of land having a specific land attribute as a land attribute. It is characterized by recognizing each data type.
According to this, a plurality of types of land boundary lines overlapping at the same position are expressed by one link data. Therefore, unlike the prior art, it is not necessary to manage a plurality of data (polygon image data) for the same area for each type of land boundary line.
For example, as shown in FIG. 22 described above, when moving the positions of a plurality of types of land boundary lines whose positions overlap, it is only necessary to change the position (end point data) of the corresponding link data. In addition, if you want to move only a specific land boundary line included in one link data, delete the land attribute data corresponding to the land boundary line from the link data, and create a new one corresponding to the land boundary line to be moved. It is sufficient to generate simple link data. That is, it is not necessary to generate and manage a plurality of data (polygon image data) for the same region as in the conventional case.

The land boundary line may be a plurality of types of lines among a brush boundary line, a character boundary line, a ground boundary line, a land use boundary line, an administrative boundary line, and a route.
According to this, it is possible to manage the land texture, usage, route to be contacted, and the like, and it is highly convenient in evaluating land, for example.

Further, the land recognition means extracts one of the link data having the land attribute data representing the specific land attribute as the land attribute data of the land in contact with one side, and the end point data represented by the end point data of the extracted link data An initial link setting means for setting one as a start point and the other as an end point, and setting the end point as a search point; and the search point as a start point of each other link data connected to the search point; Each other end of each link data is set as an end point of each of the other link data, and the specific land attribute is selected from the start point toward the end point from the other link data. Attribute boundary search means for extracting link data as land attribute data of land in contact with the same side as the link data extracted in step (3), and an end point of the link data extracted by the attribute boundary search means As a new search point, the attribute boundary search means is repeated until the new search point and the start point set by the initial link setting means match, thereby extracting the continuous link data and the specific search It is characterized by recognizing the range of land with land attributes.

The node data, link data, and land attribute data are the map prescribed in Article 17 of the Real Estate Registration Act, the drawing prescribed in Article 24, Paragraph 3 of the Real Estate Registration Act, and the Article 2, Paragraph 1 of the Detailed Regulations of the Old Land Register Act. A map attached to the land ledger stipulated in, a map stipulated in Article 2, Paragraph 6 of the National Land Survey Act, and a map of one or more of the location maps stipulated in Article 6, Paragraph 2 of the Land Readjustment Registration Order It is provided based on the land boundary line and land attributes described above.
According to this, it is possible to create an accurate map closer to the current state by mutually complementing information that is deficient or inaccurate in each of the plurality of maps.

In addition, it comprises network data synthesizing means for synthesizing at least a part of the contents of a plurality of network data to generate new network data and storing it in the storage means, the network data synthesizing means comprising the plurality of networks to be synthesized The link data corresponding to the link of the overlapping position between the data is set as one link data, and the land attribute data included in the plurality of link data is included in the one link data, The new network data is synthesized.
According to this, when a plurality of network data are integrated, each link data corresponding to a link existing in duplicate at the same position can be combined into one link data while maintaining the attribute.

And a network data generating means for extracting land boundary lines from the map data and generating node data corresponding to each intersection of the land boundary lines and link data corresponding to the land boundary lines connecting the intersections. Features.
According to this, the network data can be automatically generated from the map data, and the work for creating the network data can be reduced.

Each link data includes generation time data indicating a time when a corresponding land boundary line has occurred and / or disappearance time data indicating a time when the corresponding land boundary line has disappeared.
According to this, the generation and / or disappearance time of the land boundary line corresponding to the link data can be managed.

Further, the land recognizing means is a link representing the continuous link from only link data corresponding to a land boundary line existing at a specific time or period based on the occurrence time data and / or the disappearance time data. It is provided so that data can be extracted.
According to this, each kind of land boundary line of a specific time or period can be recognized.

Also, based on the occurrence time data and / or the disappearance time data, link data corresponding to the land boundary line existing at the first time point or period, and link corresponding to the land boundary line existing at the second time point or period. A network data comparison means for detecting a difference from the data is provided.
According to this, each type of land boundary line at a plurality of time points or periods can be compared.

The storage means stores a plurality of network data corresponding to at least a part of the common area, and compares the plurality of network data with at least a part corresponding to the common area. Network data comparison means for detecting points is provided.
According to this, it becomes possible to detect a difference by comparing network data created based on each of a plurality of maps.

Furthermore, each link data of at least one of the plurality of network data includes generation time data indicating a time when a corresponding land boundary line has occurred and / or disappearance time data indicating a time of disappearance, Link data corresponding to a land boundary line existing at a specific time or period in the network data based on the occurrence time data and / or the disappearance time data of the network data, and link data of other network data It is characterized by detecting a difference.
According to this, each kind of land boundary line at a specific time point or period can be compared with the land boundary line represented by other network data.

Further, the link data including the occurrence time point data and / or the disappearance time point data is provided corresponding to land boundary lines shown on a plurality of maps created at different time points, and the occurrence time data corresponds to It is data representing the creation time of a map where a land boundary line appears, and the disappearance time data is data representing the creation time of a map where the corresponding land boundary line disappeared.
According to this, it becomes possible to specify the occurrence and / or disappearance time of each land boundary line based on the map to be used.

Further, the network data is divided into a plurality of maps that divide the predetermined area, and the network data comparison means compares the network data in units of the maps.
According to this, even if a large amount of network data is compared, processing can be performed while being distributed in smaller outline units .

Et al is, the editing view Guo and the inspection diagram Kakunai, each link data corresponding to the land boundary line in contact with the land having the same land attributes, the該土place toward the end of each said link data is the starting point Link direction setting means for setting one of the end points represented by the end point data of each link data as the start point and the other as the end point so as to contact each other on the same side, and the link direction setting means for the edit map and the inspection A link direction setting covering unit that executes the link data in the map and sets the start point and the end point for each link data. By comparing the start point and end point of each temporary link belonging to the outline with the start point and end point of each inspection temporary link belonging to the inspection outline, the network data at the boundary of the edited figure outline is compared. Characterized by checking the integrity of the data.
Further, the link direction setting means extracts one of the link data in which the setting of the start point and the end point related to the link direction setting process is not set in the edit map and the inspection map, and the extracted One of the end points represented by the end point data of the link data is set as an initial point, the other is set as an end point, and an initial direction setting means for setting the end point as a search point, and the search point is connected to each of the other end points connected to the search point The link data extracted by the initial direction setting means from the other link data is the start point of the link data, the other end of each of the other link data is the end point of the other link data. Continuously extracting link data having the same land attribute data as one side of land attribute data as land attribute data of the land in contact with the same side as the extracted link data from the start point toward the end point Direction setting means, with the end point of the link data extracted by the continuous direction setting means as a new search point, the continuous direction setting means as the new search point and the start point set by the initial direction setting means By repeating until the two match, the start point data and the end point data of the link data having the same land attribute data are set so that the land touches the same side from the start point to the end point. To do.
According to this, the direction of each temporary link along the boundary of the edit map outline is set so that the same side is within the edit map outline from the start point to the end point. In one inspection contour, the direction of the inspection temporary link along the boundary with the editing contour is set so that the same side is within the inspection contour from the start point to the end point. Accordingly, all the temporary links and all the inspection temporary links are directed in the same direction or in the opposite direction. The boundary consistency checking means compares the start point of each temporary link and the start point (or end point) of each temporary link for inspection, and the end point of each temporary link and the end point (or start point) of each temporary link for inspection, It is possible to check the consistency at the boundary of the edit map.
Further, when it is detected that there is no link data to be extracted by the continuous direction setting means until the search point coincides with the start point set by the initial direction setting means, the link data indicates the corresponding land attribute. It can be detected that it is not configured to enclose.

In addition, duplicate data detection means for detecting a plurality of link data having overlapping positions from the network data in the edit map edited by the network data editing means, and duplicate detected by the duplicate data detection means A plurality of link data to be converted into one link data, and link data unifying means for including each land attribute data included in the plurality of link data as a base in the one link data. It is characterized by.
According to this, it is possible to unify links that are duplicated due to an operator's operation mistake or the like.

The network data is stored in a storage means of a server computer, and a plurality of client computers read the network data from the server computer in units of the edit map, and the network data in the edit map By implementing the network data editing means, the temporary node generating means, the temporary link generating means, the inspection temporary node generating means, the inspection temporary link generating means, and the boundary consistency checking means, The means is distributedly processed by a plurality of client computers.
According to this, editing and inspection of network data can be performed in parallel in map units.

Further, when editing the network data by the network data editing means and inspecting by the boundary consistency checking means, the plurality of outlines are skipped by one as the edit plots. A map processing order control means for controlling the order of editing and inspecting each contour so as to edit and inspect the unedited contour between the contours that have been edited and inspected after editing and inspection. It is characterized by providing.
According to this, when simultaneously editing a plurality of contours on the network data by parallel processing, it is possible to prevent one editing contour and the contours adjacent thereto from being edited in parallel. Thereby, it is possible to prevent comparison of unexamined maps after editing.

Moreover, in order to solve the said subject, the network data verification system which concerns on this invention is equipped with the following structures. That is, storage means for storing network data including node data representing nodes in the virtual space, link data representing links connecting the nodes, and divided into a plurality of map units, and the network data, The network data editing means that can be edited in map units, and the connection state between the network data in the edited map and the network data outside the edited map at the boundary of the edited map edited by the network data editing unit A network data verification system comprising boundary consistency checking means for checking consistency, wherein temporary nodes are generated at the breakpoints of each link cut at the boundary of the network data in the edited map Temporary node generation means, a node located adjacent on the boundary, and a temporary link connecting temporary nodes Provisional link generation means for adding link data representing as link data belonging to the edited outline, inspection outline extraction means for extracting an inspection outline surrounding the edited outline from the virtual space, and the inspection Temporary inspection node generation means for generating an inspection temporary node at a link break point of the network data in the map outline at the boundary with the edited map outline, and a position adjacent to the boundary on the boundary Inspection boundary link generating means for adding link data representing a temporary link for inspection and a temporary link for inspection connecting inspection temporary nodes as link data belonging to the inspection outline, and the boundary consistency inspection means includes: Then, by comparing the position information of each temporary link belonging to the edited map outline and the position information of each inspection temporary link belonging to the inspection map outline, the consistency of the joint state is checked. The features.
According to this, the network data can be edited in edit map units, and the segmentation position of the link data at the boundary of the edit map data matches the network data outside the edit map map. It can be inspected for removal.

Further, the network data includes area attribute data representing an area attribute of an area surrounded by a plurality of links, and each link data includes end point data specifying nodes at both end points, and the editing map and the inspection Link data representing a link that touches an area having the same area attribute in the map outline, so that each link data touches the area on the same side from the start point to the end point. The link direction setting means for setting one of the end points represented by the start point and the other as the end point, and executing the link direction setting means for each link data in the edit map and the inspection map, Link direction setting covering means for setting the starting point and the ending point for each link data, and the boundary consistency checking means Checking the consistency of the network data at the boundary of the edited map by comparing the start point and end point of each temporary link with the start point and end point of each test temporary link belonging to the test map It is characterized by.
Furthermore, each link data includes the area attribute data representing the area attribute of each area that touches both sides of the link represented by the link data, and the link direction setting means includes the edit map and the inspection map. One of the link data for which the start point and end point related to the link direction setting process are not set is extracted, and one of the end points represented by the end point data of the extracted link data is set as the start point and the other is set as the end point. Initial direction setting means for setting the end point as a search point, the search point as a start point of each other link data connected to the search point, and each other end of each other link data As the end point of other link data, the same area attribute data as the area attribute data on one side of the link data extracted by the initial direction setting means is selected from the other link data. Continuous direction setting means for extracting link data as area attribute data of an area that contacts the same side as the extracted link data from the start point to the end point, and the link data extracted by the continuous direction setting means Link data having the same area attribute data is obtained by repeating the continuous direction setting means with the end point as a new search point until the new search point and the start point set by the initial direction setting means match. The start point data and the end point data are set so that the area contacts the same side from the start point toward the end point.
According to this, the direction of each temporary link along the boundary of the edit map outline is set so that the same side is within the edit map outline from the start point to the end point. In one inspection contour, the direction of the inspection temporary link along the boundary with the editing contour is set so that the same side is within the inspection contour from the start point to the end point. Therefore, all the temporary links in the editing map and all the inspection temporary links in the inspection map are directed in the same direction or in the opposite direction. The boundary consistency checking means compares the start point of each temporary link and the start point (or end point) of each temporary link for inspection, and the end point of each temporary link and the end point (or start point) of each temporary link for inspection, It is possible to check the consistency at the boundary of the edit map.

In addition, duplicate data detection means for detecting a plurality of link data having overlapping positions from the network data in the edit map edited by the network data editing means, and duplicate detected by the duplicate data detection means A plurality of link data to be made into one link data, and link data unification means for including each area attribute data included in the plurality of link data as a base in the one link data It is characterized by.
According to this, it is possible to unify links that are duplicated due to an operator's operation mistake or the like.

The network data is stored in a storage means of a server computer, and a plurality of client computers read the network data from the server computer in units of the edit map, and the network data in the edit map By implementing the network data editing means, the temporary node generating means, the temporary link generating means, the inspection temporary node generating means, the inspection temporary link generating means, and the boundary consistency checking means, The means is distributedly processed by a plurality of client computers.
According to this, editing and inspection of network data can be performed in parallel in divided map units.

Further, when editing the network data by the network data editing means and inspecting by the boundary consistency checking means, the plurality of outlines are skipped by one as the edit plots. A map processing order control means for controlling the order of editing and inspecting each contour so as to edit and inspect the unedited contour between the contours that have been edited and inspected after editing and inspection. It is characterized by providing.
According to this, when simultaneously editing a plurality of contours on the network data by parallel processing, it is possible to prevent one editing contour and the contours adjacent thereto from being edited in parallel. Thereby, it is possible to prevent comparison of unexamined maps after editing.

  According to the land data management system according to the present invention, data can be managed by a simple process even when land data including a plurality of types of land boundary lines is handled. Further, according to the network data verification system according to the present invention, when the network data is edited in a predetermined edit map unit, the network data in the edit map and the network outside the edit map at the boundary of the edit map The consistency of the bonding state with the data can be inspected.

Hereinafter, the best mode for carrying out a land data management system and a network data verification system according to the present invention will be described in detail with reference to the accompanying drawings.
In the present embodiment, a case where the land data management system and the network data verification system are used in the land status authorization work for collecting property tax and inheritance tax will be described as an example.
In the present embodiment, since the network data verification system is a system included in the land data management system, the land data management system and the network data verification system are hereinafter simply referred to as a land data management system.

FIG. 1 is a block diagram showing a configuration of a land data management system A according to the present embodiment. The land data management system A includes a server computer S and a plurality of client computers C connected to the server computer S via a network so as to communicate with each other.
The control units Sa and Ca of the server computer S and each client computer C are composed of electronic circuits including a CPU, a memory, and the like, and are provided so as to be able to execute various functions (means) by executing a software program. In addition, the server computer S and each client computer C are created by input devices Sb and Cb such as a keyboard, mouse, digitizer, and tablet that allow the user to input information to the control units Sa and Ca, and the control units Sa and Ca. Display devices Sc, Cc such as a display for displaying the image data.
Since the configurations of the client computers C, C,... Are similarly provided, only the configuration of one of the client computers C is shown in FIG.

In each hard disk of the server computer S and each client computer C, a land data management program for realizing the land data management system A is stored (installed) in a computer-readable manner. The land data management programs are prepared for the server computer S and the client computer C, respectively, and have different functions.
The land data management program for the server computer S is executed by the control unit Sa of the server computer S so that the map reading / editing means 23, the network data generating means 24, the network data communication means 26, etc. Make it happen.
The land data management program for the client computer C is executed by the control unit Ca of the client computer C, so that the network data communication means 10, the network data comparison means 12, the network data composition means 14, the network data editing means 16, the network The data checking means 18, the land recognition means 20, and the like are realized on the client computer C.

Storage means Sd and Cd of the server computer S and the client computer C indicate storage means such as a memory and a hard disk. Each data (map data a, network data b, integrated network data d) described in the storage means Sd and Cd in FIG. 1 is read and written by the respective functions of the land data management system A with respect to the storage means Sd and Cd. Data are shown.
The storage means Sd and Cd are not limited to the memory and hard disk of the server computer S and the client computer C, and any storage means that can read and write information can be employed. For example, it may be realized by reading / writing an auxiliary storage device such as an optical disc with the optical disc device of the server computer S or the client computer C, or another computer connected to the server computer S or the client computer C via a network. It can also be realized by accessing the storage device. Further, the storage units Sd and Cd are not necessarily limited to one storage device, and may be realized by a combination of a plurality of storage devices.

  The server computer S also has a scanner 50 that can scan a map printed on paper and capture map image data, and an optical disk device 52 that can read map data recorded on an optical disk, and storage means. The map data a can be read in Sd.

  Hereinafter, the means 2 to 20 realized by the land data management program being executed by the control units Sa and Ca, and the data (map data a, network data b, and integrated network data d) will be described.

(Map reading / editing means 23, map data a)
In the present invention, the map data refers to a map that is converted into digital data including single or plural types of land boundary lines (described later) and land attribute information (described later) of each land divided by the land boundary lines.
As a specific example, map data a that is printed on paper and includes a map on which one or more types of land boundary lines are written by the scanner 50 is converted into digital image data, and each brush's lot number and writing boundary line information. Digital data such as a so-called numerical lot number map including
When this land data management system A is used in land certification work to collect property tax and inheritance tax, the map data a or the printed map that is the basis of the map data a includes numerical lot numbers and maps Use certified maps, the above-mentioned public maps, old public maps, and the Law Article 17 map.

The numerical lot number map is digital data that represents a brush of an evaluation target area of a fixed asset, which is used for collecting a fixed asset tax in a local government. The numerical lot number map shows the shape of each brush and road, polygon data corresponding to each brush and road, and the brush and road attributes (such as lot numbers) associated with each polygon data are recorded. And land ledger data.
Numerical lot maps are generally created based on the above-mentioned public maps, old public maps, and the Law Article 17 map. However, there is a gap when copying from public maps. This is not necessarily the same as the official map, for example, the local government may change it to reflect the current situation after copying.
In addition, the texture recognition map is a map in which the texture in each brush is expressed.

  The map reading / editing means 23 stores the map data a converted into digital image data by reading the map described on the paper with the scanner 50 in the storage means Sd, or the position and shape of the route and the brush are specified in advance. The map data a (for example, a numerical lot map) converted to digital data is read from the optical disk via the optical disk device 52 and recorded in the storage means Sd.

In addition, the map attached to the land register specified in Article 2, Paragraph 1 of the Detailed Regulations of the Old Land Register Act, the map specified in Article 2, Paragraph 6 of the National Land Survey Act, and Article 6, Paragraph 2 of the Land Readjustment Registration Order It is more preferable that other maps that are publicly recognized, such as a location map prescribed in the above, are further read by the map reading / editing means 23. As a result, the possibility of being able to generate a more accurate current situation map by complementing the deficiencies of the information described on the maps of each other is enhanced.
It is desirable to read not only the latest map but also a past map that is older than the latest map. This makes it easier to track changes in the land world and increases the possibility of generating more accurate current maps.
In addition, it is desirable to further prepare and read digital ortho image data used for checking the current state of the land.

  Further, the map reading / editing means 23 makes the operator input data indicating the creation time of the read map, or reads the creation date described in the map using OCR technology, etc. In association with the map data a to be stored in the storage means Sd.

Each type of map to be read may have different outlines and scales for each type, or even for the same type of map. Therefore, the map reading / editing means 23 unifies the scale of each map data a by enlarging or reducing the scale of each read map data a, and at the same time a predetermined feature or point on the map data a. Are connected to each other, and the map data a are connected to each other and divided into the same map unit between the map data a, thereby unifying the area represented by the unit map of each map data a. The method of configuring the map data a in the map unit is not limited to the above method, and a region of each unit map is determined in advance, and the map data a is included in each unit map region. You may go by gathering the above information. In addition, the unit map is defined as one section, for example, by dividing the entire area of a predetermined area, which is a target for certification of fixed assets, into 10 km square areas in a grid pattern.
The map reading / editing means 23 may be configured to automatically perform the enlargement / reduction or division into map units so that the operator can manually perform operations using the output device Sc and the input device Sb. It may be configured. Further, the means for editing the map data may be realized by being distributed and processed on the plurality of client computers C by the land data management program of the client computer C.

In addition, various maps such as the public map read by the map reading / editing means 23 and the Law Article 17 map are erroneous due to, for example, duplication of lot numbers or misalignment of the border line due to a transcription mistake by the operator at the time of update. May contain information. Therefore, before the map is read by the map reading / editing means 23, a preliminary work for confirming whether there is any wrinkles or the like in the map is performed in advance, and the quality of the map is kept constant by correcting an incorrect point. It is desirable to ensure it.
Also, when the map is read by the map reading / editing means 23 into the land data management system according to the present invention, the information on the land boundary lines and land attributes included in the map is examined, whether there are duplicate lot numbers, updated similar types There may be provided means for automatically checking whether there is an error in the information of land boundary lines and land attributes described in the map to be read, such as inconsistencies between the maps.

(Network data generating means 24, network data b)
The network data generation means 24 extracts the land boundary line from each map data a, node data corresponding to each intersection of the land boundary lines in a virtual space corresponding to a predetermined area to be certified for fixed assets, and Link data corresponding to land boundaries connecting the intersections is generated, and network data b composed of node data and link data is generated.

The land boundary line in this application is a general term for various boundary lines that divide land attributes (area attributes). The land attributes include lot numbers, characters (bruises), textures, uses, local governments, blocks (divisions surrounded by routes), and the like (not limited to these). As described above, the land boundary line is a boundary line that separates these land attributes. Examples include a certain boundary line, a use boundary line that is a boundary line that divides the use of land, an administrative boundary line that divides the jurisdiction of a local government, and a route that divides a block.
Further, the land attribute data in the present application is data representing the land attribute.

First, the network data generation means 24 extracts various land boundary lines recorded on the map data a. For example, the stroke line is extracted by image processing from the map data a created by reading the public map, or the ground boundary line is similarly extracted from the map data a corresponding to the certified surface map.
In addition, from the map data a corresponding to the numerical lot number map, based on the land ledger data, a brush boundary line is recognized and extracted from the shape of polygon data representing a brush, or polygon data representing a route dividing a block is displayed. The route is recognized and extracted from the shape.

FIG. 2A is a diagram showing a certain area on the map data aa based on the lot number map created as of January 1, 1987. A line 22 of the map data aa represents a brush border line, and numerals 101 to 106 represent lot numbers of the brushes separated by the brush border line.
The network data generating means 24 extracts the brush stroke 22 from the map data aa, and, as shown in FIG. 2 (b), node data AN1, AN2,. Link data AL1-2, AL1-3,... Corresponding to the stroke line 22 connecting the intersections are generated. The network data generation means 24 defines one of node data ANa and node data ANb (end point data) at both end points of each link data as a start point and the other as an end point. In this example, a and b when ALa-b are set indicate the start node number and the end node number, respectively.

Further, the network data generating means 24 recognizes a numerical value (numbers 101 to 106 in FIG. 2A) representing the land number as the land attribute from the map data aa corresponding to the land number map by a technique such as OCR, The lot number of the brush is associated with the link data corresponding to each brush border line and stored as land attribute data (area attribute data).
FIG. 2C is an explanatory diagram showing the contents of each link data. As shown in FIG. 2 (c), each link data ALa-b includes an attribute that specifies node data ANa and ANb at the start point and the end point. Further, a lot number (103 in the case of link data AL1-2) of land (area) that touches the right side from the start point to the end point, and a lot number (link data AL1) as land attribute of the land that touches the left side -2 includes 102).
The network data generating unit 24 stores the network data ba composed of the node data and the network data generated based on the map data aa in the storage unit Sd.

  FIG. 3 (a) is a diagram showing a certain area on the map data ab based on the map of ground recognition as of January 1, 1995, the same as FIG. 2 (a). The network data generating means 24 performs the same processing as that performed on the map data aa in FIG. 2A on the map data ab shown in FIG. Each node data BNa and each link data BLa-b shown in c) are generated.

  However, the map data ab based on the map of land identification includes not only the lot number information but also the grid information as the land attribute. The network data generation unit 24 extracts all land boundary lines (brush boundary lines and ground boundary lines) from the map data ab. Then, the lot number and the ground pattern as the land attributes are read from the map data ab, and are stored in association with the link data corresponding to each land boundary line as the land attribute data.

FIG. 3C is an explanatory diagram showing the contents of each link data. Each link data BLa-b is associated with land attribute data representing the land attributes (land number and land) of each land that touches both sides from the start point to the end point.
For example, in the link data BL1-2, the land attribute data of the lot number in contact with the right side is 103 and the left side is 102, and both sides are residential land and do not form a border line. Is stored with predetermined data indicating that it is not a boundary line. In addition, the link data BL3-4 has the land bordering the right side as farmland and the left side as residential land, which is a border line as well as a border line. As shown in FIG. 3C, the network data generation unit 24 sets data representing farmland as the land attribute data of the land in contact with the right side, and sets data representing the residential land in the left land attribute data.
The network data generation unit 24 stores the network data bb including the node data and network data generated based on the map data ab in the storage unit Sd.

  FIG. 4 (a) is a diagram showing a certain area on the map data ac based on the ground map as of January 1, 2004, which is the same as FIG. 2 (a) and FIG. 3 (a). The network data generation means 24 performs the same processing as the processing performed on the map data ab in FIG. 3A on the map data ac shown in FIG. Each node data CNa and each link data CLa-b shown in c) are generated.

However, the map data ac includes a field boundary line that does not match the brush boundary line. As shown in FIG. 4B, the network data generating means 24 generates node data CN4 and CN8 at the intersections with the other border lines for this ground boundary line, and links the same as with the other border lines. Data CL4-8 is generated.
As shown in FIG. 4 (c), the link data CL4-8 is the land attribute data of the land touching the right side is farmland, the left side is residential land, and with respect to the lot number, both sides are 104-1 and there is no border line. Therefore, the attribute data representing the lot number contains predetermined data representing that it is not a stroke line.
The network data generation unit 24 stores the network data bc including the node data and network data generated based on the map data ac in the storage unit Sd.

Fig. 5 (a) shows the same area as Fig. 2 (a), Fig. 3 (a), and Fig. 4 (a) on the map data ad based on the public map as of June 15, 2004. FIG. The network data generation means 24 performs the same processing as the processing performed on the map data aa to ac on the map data ad shown in FIG. 5A, as shown in FIGS. 5B and 5C. Each node data DNa shown and each link data DLa-b are generated.
It is assumed that the map data ad does not include information representing the ground plane.
The network data generation unit 24 stores network data bd including node data and network data generated based on the map data ad in the storage unit Sd.

  Further, the network data generating means 24 associates data representing the creation time of the map (creation time data) stored in association with the map data a serving as the basis, respectively, with the generated network data ba to bd. Remember.

  The network data generating means 24 is realized by distributing the map data a to each client computer C in the map unit and distributedly processing on the plurality of client computers C by the land data management program of the client computer C. You may comprise as follows.

  In this embodiment, for the sake of simplicity of explanation, the explanation is focused on the brush border line and the ground border line as the land border line. However, in actual operation, there are many kinds of land border lines (the brush border line, The network data generating means 24 generates network data corresponding to each land boundary line using map data including a character boundary line, a ground boundary line, a land use boundary line, an administrative boundary line, and a route.

(Network data communication means 26, 10)
The network data communication means 26 and 10 are provided in the server computer S and each client computer C, and the network data b stored in the storage means Sd of the server computer S is stored in the storage means Cd of each client computer C in the above-described units. After the data is transferred or the client computer C edits the network data (map network data), the map network data is returned to the server computer S. The network data communication means 26 of the server computer S replaces the edited edited outline network data with the corresponding outline of the original network data b.

(Map processing sequence control means 25)
When executing the network data comparison means 12, the network data synthesizing means 14, the network data editing means 16, the network data checking means 18 and the like, the outline processing order control means 25, each unit outline of the network data b, Each of the client computers is distributed to a plurality of client computers C, C,.

(Network data comparison means 12)
Next, the network data comparison unit 12 realized by each client computer C will be described.
The network data comparison means 12 compares each network data ba, bb,... On the server computer S.
The network data comparison means 12 is activated when the operator designates two (a plurality) of network data b to be compared and a range of regions to be compared (or a map to be compared) to the client computer C. Alternatively, when comparing all the maps of the network data b, the operator makes a total of two (plurality) of network data b with respect to any one of the server computer S or the client computer C. When the operation for instructing the comparison is performed, the map processing sequence control means 25 allocates and transmits the map corresponding to the same area of each network data b to each client computer C in the map unit, The network data comparison means 12 of the client computer C is activated and compares the map network data in map units.

The case where the network data comparing means 12 compares the network data ba and bb shown in FIGS. 2B and 3C and FIGS. 3B and 3C is taken as an example.
The network data comparison unit 12 reads out a map to be compared with the network data ba and bb via the network data communication units 26 and 10. The network data comparison means 12 compares all link data ALa-b of the network data ba and all link data BLa-b of the network data bb, and detects a link that exists in one and does not exist in the other. This comparison is performed by comparing the coordinate data of the node data of the start point and the end point, and searching whether or not there is link data in which the coordinate data of the start point and the end point match. In the comparison of the network data ba and bb of FIGS. 2B and 2C and FIGS. 3B and 3C, the link data AL3-4 and AL5-6 of the network data ba and the link of the network data bb Data BL3-4, BL4-5, BL4-7, BL6-7, BL7-8 are detected as non-matching link data.

  Here, “coordinate data match” is not limited to the case where the coordinate values match completely, a predetermined allowable error range is defined, and the deviation of the coordinates within the range is the same. You may comprise so that it may treat as a thing. Further, the link data in which the start point and the end point coincide with each other only by changing the start point and the end point is treated as the same.

Moreover, the network data comparison means 12 compares the land attribute data of the both sides which each has for each link data in which the position corresponded, and detects a difference.
In the comparison of the network data ba and bb, for example, the link data AL3-5 and BL3-6 have the same position, but the brush number adjacent to the left side is different between 104 and 104-1.
Further, when the comparison between the network data bb and bc is taken as an example, the link data BL4-7 and CL5-9 have the same land attribute data of the position and lot number, but the land attribute data of the land in contact with the right side is There is a difference between farmland and residential land.

The network data comparison means 12 outputs the detected different link data to the output device Sc of the server computer S or the output device Cc of the client computer C by changing the color of the other link data, etc. To be notified.
As a result, between the maps on which the network data ba and bb are based, the land boundary lines that have been changed between the time of their creation and the land boundary lines in which the position and land attributes are erroneously recorded are detected. be able to.
In addition, the operator can grasp different land boundary lines between the respective maps from the output different portions. Further, by examining these differences, it is possible to examine whether the difference is due to a normal change or due to an error or shift of the underlying map. The operator can rewrite and correct the link data that needs to be corrected by the network data editing means 16 described later.

(Network data editing means 16)
The network data editing unit 16 is a unit that enables network data to be edited in map units. The network data editing means 16 displays network data b as shown in FIG. 2B, FIG. 3B, etc. on the output device Cc. The operator is provided so as to operate the input device Cb to move or delete the position of each node data or link data. Also, new node data and link data can be added.
Further, the network data editing means 16 is further provided so as to display attributes of each node data and link data as shown in FIG. 2C and FIG. .
The operator can edit the arbitrary network data b as necessary by examining the difference portion displayed by the network data comparison means 12.

(Network data synthesis means 14, integrated network data d)
The network data synthesizing unit 14 synthesizes the contents of a plurality of network data to generate new network data.
When the operator performs an operation for instructing any one of the server computer S or the client computer C to synthesize two (plural) network data b, the map processing sequence control means 25 Assigns the map corresponding to the same area of each network data b to each client computer C and transmits it in units of map, and the network data synthesizing means 14 of each client computer C is activated, and the network data b in units of map. Is synthesized.

  The map network data synthesized by the network data synthesizing unit 14 is transferred to the server computer S via the network data communication units 10 and 26. The combined map network data received by the server computer S from each client computer C is collected as one network data b and stored in the storage means Sd of the server computer S as integrated network data d.

Hereinafter, the configuration of the network data synthesizing unit 14 will be described by taking as an example the case of synthesizing the network data ba to bd shown in FIGS.
FIG. 6 is an explanatory diagram showing a configuration of combined network data obtained by combining the network data ba to bd.

The network data synthesizing unit 14 synthesizes all node data and link data included in the network data ba to bd, thereby creating synthesized network data having node data and link data corresponding to all of them.
However, the network data synthesizing unit 14 sets the link data corresponding to the link at the overlapping position among the plurality of network data to be synthesized as one link data, and a plurality of link data as a basis for the one link data. Each land attribute data included in is included.

For example, since the link data AL3-5, BL3-6, CL3-7, and DL3-4 of the network data ba to bd are all link data having the same position, the network data synthesizing unit 14 synthesizes them. Then, one piece of link data UL3-7 (FIG. 6B) corresponding to these is generated.
The link data AL3-4, BL3-4, BL4-5, CL3-4, CL4-5, CL5-6, and DL3-5 are link data in which all or part of them match each other. The network data synthesizing unit 14 takes in node data corresponding to all of the node data (end point data) constituting the end points of these link data into the synthesized network data, and generates link data connecting the respective node data. . That is, as shown in FIG. 6B, node data UN3, UN4, UN5, UN6 and link data UL3-4, UL4-5, UL5-6 are generated.
Note that the position match here is not limited to the case where the coordinate values match completely, but a predetermined allowable error range is defined, and the deviation of the coordinates within the range is treated as the same. It may be configured.

Further, as shown in FIG. 6C, the network data synthesizing unit 14 inherits the land attribute data of each link data of the network data ba to bd, and generates each link data of the synthesized network data.
At this time, the land attribute data is classified and stored in each link data for each creation time point data of the network data that is the basis of each link data. That is, the creation time data shown in FIG. 6C is the generation time data and the disappearance time data representing from which time point each land line appears and disappears.

FIG. 6A is an explanatory diagram conceptually showing the brush boundary line and the ground boundary line represented by the composite network data generated in this way. 6 (a) and 6 (b), link data UL5-9 is a border line that divides lot numbers 104-1 and 104-2, which occurred on January 1, 1995, and also separates farmland and residential land. It is a borderline. The link data UL4-8 is a boundary line that divides farmland and residential land, which occurred on January 1, 2004. The link data UL5-6 is a border line separating the lot numbers 103 and 104 as of January 1, 1987, and the lot numbers 103 and 104- from January 1, 1995 to January 1, 2004. It is a border line that separates 2 from the land border line that disappeared as of June 15, 2004.
Thus, the composite network data has node data and link data corresponding to all node data and link data included in the network data ba to bd.

  The network data synthesizing unit 14 of each client computer C transmits to the server computer S the combined network data in map units generated by combining the network data ba to bd in map units. The server computer collects the composite network data in map units and stores them in the storage means Sd as integrated network data d representing land boundaries and land attributes of a predetermined area to be certified for fixed assets.

Based on this integrated network data d, it is possible to identify the time of occurrence and disappearance of each land boundary line in a predetermined area subject to certification of fixed assets, as well as to determine the type of land attribute (land number or It is possible to identify changes in the age of the earth).
For example, from a part of the integrated network data d shown in FIG. 6C, the link data UL5-9 is a brush that separates addresses 104-1 and 104-2 from a map created on January 1, 1995. As well as being a borderline, it can be seen that this occurred as a borderline between farmland and residential land. Further, it can be seen that the link data UL5-9 is no longer a boundary line from the time of January 1, 2004.
As another example, the link data UL5-6 is a brush border that separates addresses 103 and 104 as of January 1, 1987, and at least from January 1, 1995 to 2004 Until the first day of the month, it is a brush border that separates the 103rd address and the 104-2 address, and as of June 15, 2004, it disappears.

In addition, for example, as shown in the official map of FIG. 5A, the land attribute data may not be specified when the land texture is not described or the information cannot be read by the map reading / editing means 23. is there. In this example, in the public map of FIG. 5, no information on the feature is described (or the feature information cannot be read by the map reading / editing means 23), so the map boundary line as of June 15, 2004 Cannot be identified.
In such a case, the network data synthesizing unit 14 inherits the information of the immediately preceding map data (in this case, the information of the boundary line as of January 1, 2004 in FIG. 4), and the data of June 15, 2004 is inherited. It may be configured to be registered as information at the time of the day, or predetermined data (indicated by “?” In FIG. 6C) indicating that the land attribute data representing the boundary line is unknown. You may comprise so that it may substitute.

(Network data comparison means 12)
The network data comparison means 12 described above is not only for comparing a plurality of network data, but for the integrated network data d, the link data corresponding to the land boundary line existing at the first time point or period, and the second data It is possible to detect a difference from the link data corresponding to the land line existing at the time or period.

  For example, when comparing the land boundary line that existed as of January 1, 1987 and the land boundary line that existed as of January 1, 2004, the link data in FIG. Extract the link data corresponding to the land boundary line existing as of January 1, 62 and the link data corresponding to the land boundary line existing as of January 1, 2004, and compare both. Those differences can be detected.

Moreover, not only a specific time point but link data which existed within the period with a fixed time width can also be compared.
For example, land boundaries that existed from January 1, 1987 to January 1, 1995, and land that existed from January 1, 2004 to June 15, 2004 It can be compared with the boundary line. In this case, link data corresponding to all maps created between January 1, 1987 and January 1, 1995, and January 1, 2004 to June 15, 2004. Compare with the link data corresponding to all maps created during the day.

The network data comparison means 12 outputs the detected different link data to the output device Sc of the server computer S or the output device Cc of the client computer C by changing the color of the other link data, etc. To be notified. At this time, the link data corresponding to the above-described data indicating that the land attribute data is unknown (indicated by “?” In FIG. 6C) is also changed in color from other data. It is even better to display them at the same time.
The operator can grasp the land line that is different (or unknown) at a certain point in time or period from the output difference. Further, by examining these differences (unclear points), it is possible to examine whether the difference is due to a normal change or due to an error or shift of the underlying map.
The operator (user) confirms the current state by referring to the digital ortho image data representing the current state or conducting a field survey, and the link data that needs to be corrected is rewritten and corrected by the network data editing means 16. can do.

(Land recognition means 20)
In the land data management system A according to the present embodiment, land authorization for property tax collection or the like is performed using the integrated network data d. Since the integrated network data d is created by comparing various maps and matching them, it is network data that is more accurate and free of information loss than any of the underlying maps. In the present embodiment, only the four maps of FIGS. 2 to 5 are taken as an example for the sake of simplicity of explanation, but in actual operation, it is publicly recognized over a variety of types and old and new. For example, maps that are stipulated in Article 17 of the Real Estate Registration Act, drawings stipulated in Article 24, Paragraph 3 of the Real Estate Registration Act, The map attached to the land ledger prescribed in Article 2, Paragraph 1, the map prescribed in Article 2, Paragraph 6 of the National Land Survey Act, and the location map prescribed in Article 6, Paragraph 2 of the Land Readjustment Registration Order ).

Now, in the land data management system A, a specific brush is extracted from the integrated network data d to identify the land for the collection of property tax, and the use area that is an evaluation factor of the fixed asset is extracted. Therefore, a function for outputting to the output devices Sc, Cc and the like so that the operator can refer to them is required.
On the other hand, in actual operation, the integrated network data d includes link data corresponding to various types of land border lines (brush border line, character border line, ground border line, land use border line, administrative border line, route, etc.) ( In the present embodiment, for the sake of simplicity of explanation, the description is focused on the brush boundary line and the ground boundary line as the land boundary lines).
Therefore, the land data management system A includes land recognition means 20 for extracting a range of land having a specific land attribute from a variety of land boundary lines.

  Hereafter, FIG. 7 will be used by taking as an example the case of recognizing the range of the address 104-1 as of January 1, 1995 with the composite network data that is a part of the integrated network data d shown in FIG. I will explain.

  The land recognition unit 20 includes an initial link setting unit and an attribute boundary search unit.

(Initial link setting means)
The initial link setting means of the land recognizing means 20 is one piece of link data having land attribute data representing the specific land attribute 104-1 as the land attribute data of the land touching one side as of January 1, 1995. Are extracted from the integrated network data d (synthesized network data). In this example, it is assumed that UL3-4 (1 in FIG. 7) has been extracted.
Subsequently, the initial link setting means sets one of the end points represented by the end point data (node data UN3, UN4) of the extracted link data UL3-4 as the start point and the other as the end point. Note that the start point and end point are arbitrarily determined regardless of the start point and end point as attributes of the link data. In this example, it is assumed that UN3 is set as the start point (indicated by the symbol “start” in FIG. 7B) and UN4 is set as the end point. Then, the initial link setting means sets the end point UN4 to a “search point” (indicated by a symbol “search” in FIG. 7B) for searching for the next link data.

(Attribute boundary search means)
The attribute boundary search means of the land recognition means 20 uses the search point UN4 as the start point of each of the other link data UL4-5, UL4-8 connected to the search point UN4, and the link data UL4-5, UL4-8. The other end UN5, UN8 is the end point of the link data UL4-5, UL4-8.
From the link data UL4-5 and UL4-8, the link attribute UL3-4 extracted by the initial link setting means from the start point UN4 to the end points UN5 and UN8 is assigned to the land attribute at the address 104-1. Extract link data as land attribute data of land in contact with the same side (right side). In this example, since the link data UL4-5 matches the condition, the link data UL4-5 (2 in FIG. 7) is extracted.

The land recognizing means 20 repeats the attribute boundary searching means with the end point UN5 of the link data UL4-5 extracted by the attribute boundary searching means as a new search point. That is, next, UL 5-9 (3 in FIG. 7) is extracted from the link data UL 5-8 and UL 5-9, and then UL 8-9 is extracted.
The land recognizing means 20 repeats this process until a new search point and the starting point UN3 set by the initial link setting means coincide with each other, thereby forming a land boundary having the land attribute of address 104-1 The link data that is continuous with each other is extracted, and the range of the land at address 104-1 is recognized.
In FIG. 7, the link data described in the shape of an arrow indicates the end point set by the initial link setting means or the attribute boundary search means as the tip of the arrow, and the start point as the base point of the arrow.

  The land recognizing means 20 clearly indicates the recognized land range by painting the interior with a predetermined color and outputs it to the output devices Sc, Cc and the like. Alternatively, the range is notified to a predetermined land price calculation means (not shown), and the land price of the land is calculated.

Further, the land recognizing means obtains the continuous link from only the link data corresponding to the land boundary line existing at a specific time point or period based on the generation time point data and the map generation time point data as the disappearance time point data. The link data to be expressed is provided so as to be extracted.
For example, the range of the address 103 in the network data ba to bc shown in FIGS. 2 to 4 is different from the range of the address 103 in the network data bd shown in FIG. In accordance with the designation by, etc., only the link data existing within a specific time point or period can be searched to specify a range having a specific land attribute, so that the correct range at each time point and period can be recognized.

(Network data verification means 18)
The map network data edited by the network data editing unit 16 may be erroneously changed due to an operator error or the like. The network data checking means 18 is means for detecting node data or link data having erroneous information.
The operator can inspect the network data edited by the execution of the network data editing means 16 by the network data checking means 18.

FIG. 8 shows the configuration of the network data checking means 18.
The network data checking unit 18 includes a duplicate data detecting unit 30 and a boundary consistency checking unit 32.

(Duplicate data detection means 30)
When the operator edits the network data by the network data editing means 16, for example, when adding new land attribute data to the existing link data, erroneously creating new link data on the existing link data. In such a case, a plurality of link data and node data whose positions overlap due to an operation error may be generated. This makes it necessary to modify a plurality of types of land attributes having the same position because they cannot be managed with a single link data.
However, when an image of network data is output to the output device Cc or the like as described above, a plurality of overlapping data appear to be a single link data, so the operator may detect the overlapping data visually. Have difficulty.

Therefore, the duplicate data detection means 30 detects a plurality of link data and node data whose positions are duplicated from the network data in the edit map edited by the network data editing means 16.
In the present invention, a map edited by the network data editing unit 16 and checked (inspected) by the network data checking unit 18 is called an edited map.

The duplicate data detection means 30 searches for duplicate node data by comparing the coordinate data of all the node data included in the network data of the edited map outline. Further, the duplicate data detection means 30 compares node data which are end point data of all link data included in the network data of the edited map, and searches for link data where the end points coincide, that is, overlap.
The duplicate data detection means 30 duplicates the detected duplicate node data and link data to the operator by changing the color of the duplicated node data and link data from the other normal node data and link data to the output device Cc. Data is shown.

(Link data unification means 31)
The link data unifying unit 31 combines a plurality of overlapping link data detected by the duplicate data detecting unit 30 into one link data, and the one link data is included in a plurality of link data as a basis. Each land attribute data is inherited and memorized.
The processing by the link data unifying unit 31 may be automatically executed, or after the operator confirms overlapping data, a command operation for instructing the operator to unify those data, etc. You may comprise so that it may be performed when performing.

(Boundary consistency inspection means 32)
The boundary consistency checking means 32 is a means for checking the consistency of the joining state between the network data in the edited map outline and the network data outside the edited map outline at the boundary of the edited map outline edited by the network data editing means 16. It is.
As shown in FIG. 8, the boundary consistency checking unit 32 includes an inspection map extraction unit 38, a temporary node generation unit 34, a temporary link generation unit 36, an inspection temporary node generation unit 40, and an inspection temporary link generation unit 42. A link direction setting means 44 and a link direction setting covering means 46.

(Inspection outline extraction means 38)
The boundary consistency inspection unit 32 first causes the inspection outline extraction unit 38 to execute.
In FIG. 9, it is assumed that a range surrounded by a square drawn at the center is an editing outline 52 edited by the network data editing means 16.
The inspection contour extraction means 38 extracts the inspection contour 54 surrounding the edited contour 52 from the entire integrated network data d corresponding to the predetermined area. In FIG. 9, a portion drawn surrounding the edited map outline 52 is the extracted test outline 54. FIG. 10 is a view showing only the inspection outline 54.
In addition, the value of 100-212 in FIG. 9 shows the lot number as land attribute data showing the land attribute of the land enclosed by each link data.

(Temporary node generation means 34)
Subsequently, the boundary consistency checking unit 32 causes the temporary node generation unit 34 to be executed.
As shown in FIG. 11, the temporary node generating means 34 adds temporary nodes TN1 to TN9 to the dividing points of the link data divided at the boundary of the edited map 52 in the edit map 52 shown in FIG. Generate. Further, the temporary node generation unit 34 generates temporary nodes TN10 to TN13 at the positions of the four corners of the quadrangular map.
Note that the nodes UN1 to UN4 in FIG. 11 represent nodes originally corresponding to the intersections of the land border lines. The temporary node generation unit 34 does not generate a temporary node at a location where the node data UNx originally exists along the boundary.

(Temporary link generation means 36)
Subsequently, the boundary consistency checking unit 32 causes the temporary link generation unit 36 to be executed.
As illustrated in FIG. 12, the temporary link generation unit 36 includes link data TL <b> 1 to TL <b> 16 representing temporary links that connect the nodes UN <b> 1 to UN <b> 4 and the temporary nodes TN <b> 1 to TN <b> 13 that are located adjacent to each other on the boundary of the edit map 52. Are added as link data belonging to the edited map 52. Here, in the link data TL1 to TL16 of each temporary link, one side is in contact with the land in the edited map outline 52, and the other side is in contact with the outside of the edited map outline 52. Therefore, the land attribute data of the land touching one side of the link data corresponding to the link data TL1 to TL16 of each temporary link is the value of the land attribute of the land touching in the edited map 52, and the land land touching the opposite side The attribute data is predetermined data indicating that the attribute data is outside the edit map 52, for example, null data (0).
The link data UL1 in FIG. 12 represents a link that originally exists corresponding to the land boundary line. The temporary link generation unit 36 does not generate a temporary link at a location where the link data ULx originally exists along the boundary. In addition, the land attribute data on the side of the link data ULx that originally exists outside the editing map 52 is rewritten to predetermined data (for example, null data) indicating that it is outside the editing map 52 described above.

(Inspection temporary node generation means 40)
Subsequently, the boundary consistency checking unit 32 causes the temporary test node generation unit 40 to execute.
As shown in FIG. 13, the inspection temporary node generation means 40 uses the inspection data shown in FIG. Temporary nodes IN1 to IN9 are generated. Further, the inspection temporary node generation unit 40 generates inspection temporary nodes IN10 to IN13 at the positions of the four corners on the inner peripheral side of the inspection outline 54, respectively.

Nodes UN1 to UN4 in FIG. 13 represent nodes originally corresponding to the intersections of the land boundary lines. The inspection temporary node generation means 40 does not generate an inspection temporary node at a place where the node data UNx originally exists along the boundary.
The inspection contour extracting means 38 sets the inspection contour 54 so that the inner peripheral edge of the inspection contour 54 and the outer peripheral edge of the edited contour 52 overlap by one coordinate width. Extract. As a result, the inner peripheral edge of the inspection contour 54 and the outer peripheral edge of the edited contour 52 have the same data, so the node UN located at the boundary (outer peripheral portion) of the edited contour 52 Is also located at the inner peripheral edge of the inspection contour 54.

(Inspection temporary link generation means 42)
Subsequently, the boundary consistency inspection unit 32 causes the inspection temporary link generation unit 42 to execute.
As shown in FIG. 14, the inspection temporary link generating means 42 includes the nodes UN1 to UN4 and the inspection temporary node IN1 located adjacent to the inner periphery of the inspection contour 54, that is, on the boundary with the editing contour 52. Link data IL <b> 1 to IL <b> 16 representing temporary inspection links that connect to IN <b> 13 are added as link data belonging to the inspection map 54. Here, the link data IL1 to IL16 of each inspection temporary link is in contact with the land in the inspection map 54 on one side and in contact with the outside of the inspection map 54 on the opposite side. Therefore, the land attribute data of the land that touches one side of the link data IL1 to IL16 corresponding to each temporary link for inspection is the value of the land attribute of the land that touches the inspection map 54, and the land attribute of the land that touches the opposite side. The data is predetermined data indicating that it is outside the inspection outline 54, for example, null data, special data such as 9999, FFFFh, and the like that cannot exist in the inspection outline 54.
The link data UL1 in FIG. 14 represents a link that originally exists corresponding to the land boundary line. The inspection temporary link generation means 42 does not generate an inspection temporary link at a location where the link data ULx originally exists along the boundary. In addition, the land attribute data on the side of the link data ULx that is originally in contact with the outside of the inspection map 54 is rewritten to predetermined data (for example, null data) indicating that it is outside the editing map 52 described above.

(Link direction setting means 44, link direction setting covering means 46)
Subsequently, the boundary consistency checking unit 32 executes the link direction setting unit 44 for the link data of the edited map 52.
The link direction setting means 44 causes each link data corresponding to the land boundary line in contact with the land having the same land attribute in the edited map outline 52 to contact the land on the same side from the start point to the end point. In addition, one of the end points represented by the end point data of each link data is set as the start point, and the other is set as the end point.
Further, the link direction setting covering means 46 executes the link direction setting means 44 for each link data in the editing map 52, and sets the start point and the end point for each link data.

The link direction setting unit 44 will be described.
The link direction setting unit 44 includes an initial direction setting unit 44a and a continuous direction setting unit 44b.

The link direction setting means 44 first executes the initial direction setting means 44a.
The initial direction setting means 44a extracts one of the unprocessed link data in the editing map 52 that has not been processed by the link direction setting means 44, and starts one of the end points represented by the end point data of the extracted link data The other is set as the end point, and this end point is set as the search point.

This will be described with reference to FIG. First, the initial direction setting unit 44a first extracts one piece of link data that has not been processed by the link direction setting unit 44 in the editing map 52. In the example of FIG. 15, the link data UL and TL in the edited map 52 are searched from the upper left to the lower right, and the unprocessed link data is extracted by the processing related to the link direction setting unit 44. The initial direction setting means 44a first extracts the link data indicated by 1 in FIG.
The initial direction setting unit 44a sets one end point 1a represented by the end point data of the extracted link data 1 as a start point, the other end 1b as an end point, and sets the end point 1b as a “search point”.

Subsequently, the link direction setting unit 44 executes the continuous direction setting unit 44b.
The continuous direction setting means 44b sets the search point 1b as the start point of each of the other link data 2, 2 'connected to the search point 1b, and sets the other ends 2b, 2'b as end points. The start point and end point may be set by actually rewriting the attribute data of each link data 2 and 2 ', but not by rewriting the attribute data, but by temporarily setting values by setting free variables or the like. Just be fine.
The continuous direction setting means 44b is the land attribute data “205 address” on one side (right side) of the link data 1 extracted by the initial direction setting means 44a from the other link data 2 and 2 ′ (see FIG. 9). The link data 2 having the same land attribute data as the land attribute data of the land in contact with the same side (right side) as the extracted link data 1 from the start point 1b to the end points 2b and 2'b is extracted.
Here, when the start point and end point data of the link data 2 and 2 ′ are provisionally set as described above, at least the start point and end point data of the extracted link data 2 are set to 1b, Rewriting is actually performed so that 2b becomes the end point.

  The link direction setting unit 44 repeats the continuous direction setting unit 44b with the end point 2b of the link data 2 as a new search point, and extracts link data 3, 4, and 5. The link direction setting means 44 repeats until the new search point detected by the continuous direction setting means 44b matches the starting point 1a set by the initial direction setting means 44a. As a result, link data 1, 2, 3, 4, and 5 surrounding the land “A” having certain land attribute data “205” are extracted. This also sets the start point data and end point data of each link so that the land touches the same side (right side) from the start point to the end point.

Next, the link direction setting covering means 46 will be described.
The link direction setting covering means 46 repeatedly executes the link direction setting means 44, and executes the setting of the start point and the end point by the link direction setting means 44 for each link data in the edited map 52.

This will be described with reference to FIGS. 16 and 17.
As shown in FIG. 16, the link direction setting means 44 activated again by the link direction setting covering means 46 first performs processing related to the link direction setting means 44 in the editing map 52 by the initial direction setting means 44a. Extracts one 2-1 of unprocessed link data. Similarly, the link data 2 surrounding the land “B” is extracted by the continuous direction setting means 44b by extracting the link data having the land attribute data “210 address” (see FIG. 9) as the attribute data of the land adjacent to the right side. -1 to 2-4 are extracted. At this time, the direction (start point and end point) of the link data 2-2 is reversed to the direction (start point and end point) set for the land attribute data “205 address” (land “A”). Is set.

  Similarly, the link direction setting covering means 46 repeatedly executes the link direction setting means 44 until there is no unprocessed link data, and as shown in FIG. 17, for all the link data in the edited map 52 Then, the start point and the end point are set, and all the lands A to Q surrounded by the link data are recognized in order (in alphabetical order in the result of this example).

  According to the link direction setting means 44, it is possible to detect deficiencies in the network data such that the land attribute is not surrounded by the link data. That is, before the search point coincides with the starting point 1a set by the initial direction setting means 44a, the continuous direction setting means 44b can no longer detect link data extending from the search point and having the same land attribute data. In this case, the link data surrounding the land attribute data is not closed. When the link direction setting means 44 detects this deficiency, it clearly indicates to the output device Cc or the like the link data that is not closed and touches the land attribute by changing the color from other link data. Inform the operator of this deficiency.

  The boundary consistency checking unit 32 further executes the link direction setting unit 44 and the link direction setting covering unit 46 in the same manner for all the link data of the inspection map 54 including the inspection temporary link. Then, as shown in FIG. 18, a start point and an end point are set for each link data in the inspection map 54.

  Here, as shown in FIGS. 19 and 20, when attention is paid to the link data of the outer peripheral edge of the edit contour 52 and the inner peripheral edge of the inspection contour 54, they are the same on the same side from the start point to the end point. The direction is set so as to be within the outline or inspection map outline. In other words, the direction of the link data of the outer peripheral edge of the editing picture outline 52 and the inner peripheral edge of the inspection outline 54 is set in the same direction along the respective circumferential directions. Then, as shown in FIGS. 19 and 20, the link data of the outer peripheral edge of the edited contour 52 and the link data of the inner periphery of the inspection contour 54 are in opposite directions. Therefore, the link data of the outer peripheral edge of the edited picture outline 52 and the inner peripheral edge of the inspection outline 54 should match the start point and the end point. That is, if the link data TL1 to TL16, UL1 of the outer peripheral edge of the edited map outline 52 and the link data IL1 to IL16, UL1 of the inner peripheral edge of the inspection chart 54 have a one-to-one correspondence, and the corresponding link data If the positions of the start point and end point of the map do not completely match, the link data of the edited map 52 and the link data of the test map can be matched at the boundary between the edited map 52 and the test map 54. Will not be.

  The boundary consistency inspection means 32 includes link data TL1 to TL16, UL1 of the outer peripheral edge of the edited contour 52 shown in FIG. 19, and link data IL1 to IL16, UL1 of the inner peripheral edge of the inspection contour 54 shown in FIG. Are completely one-to-one, and it is determined whether the position information represented by the start point data and the end point data matches. And when it does not correspond one-to-one or when the position information represented by the start point data and the end point data does not match, the corresponding link data is clearly indicated on the output device Cc to notify the operator of the mismatch.

(Map processing sequence control means 25)
As described above, the map outline processing order control means 25 allocates each unit outline of the network data b to a plurality of client computers C, C,. The data is transmitted via the means 26, and control is performed so that the processing of the network data checking means 18 is distributed to each client computer.
Here, when each of the client computers C, C,... Executes the network data checking means 18, at least a part of each map surrounding the target edit map 52 is used as the test map 54. The inspection outline 54 is taken as a reference for the inspection (inspection) of the edited outline 52. Therefore, while editing the network data of a certain editing map 52, or checking or correcting after checking, another client computer edits the map adjacent to the editing map, and the adjacent If there is an editing mistake in the map outline to be performed, it is not possible to correctly check the edited map outline 52 by the boundary consistency inspection means 32.

Therefore, the map processing sequence control means 25, when performing distributed processing of the boundary consistency checking means 32 with a plurality of client computers C, edits and checks after skipping one side-by-side map and editing and checking. The order of editing and inspecting each contour is controlled so that the unedited contours between the contours that have finished are edited and inspected.
An example is shown in FIG. In FIG. 21, each quadrangle divided into a lattice shape represents each outline. The outline processing order control means 25 first distributes and checks each client computer C, C... So as to preferentially check the skipped outlines i, i,. After that, control is performed so that the adjacent charts to be checked are not edited or checked at the same time. .

According to the land data management system according to the present embodiment, the land data divided by the land boundary line is not linked to the polygon image data that directly expresses the position and shape of the land, but is linked by the land recognition means. It recognizes based on the land attribute data contained in the. A plurality of types of land boundary lines overlapping at the same position are expressed by one link data. Therefore, unlike the prior art, it is not necessary to manage a plurality of data (polygon image data) for the same area for each type of land boundary line.
In addition, it is possible to manage the land texture and use, the route that touches the land, and the like.

  In addition, according to the network data verification system including the network data verification means 18 included in the land data management system according to the present embodiment, the network data edited in map units at the boundary of the edited map frame. It is possible to check whether the link data segmentation position is consistent with the network data outside the edit map.

The use of the network data verification system according to the present invention is not limited to the land data management system, and network data including node data and link data representing nodes and links in the virtual space is stored in a predetermined map. As long as the system edits in units, it can be applied to any application.
For example, the present invention can be applied to a system or the like that can edit network data in which wiring of a printed circuit board on which electronic components are mounted is represented by links and the intersections of the wirings are represented by nodes. Alternatively, it represents a network of pipes, with water and sewage pipes and pipelines for circulating primary and secondary cooling water at nuclear power plants as links and branch points of pipes (pipelines) as nodes. It can also be applied to a system that handles network data or network data indicating a road network in which road routes are represented by links and intersections are represented by nodes.
When the network data verification system is used for other purposes, the upper concept of the portion surrounded by a plurality of links corresponding to the land in the above embodiment is the area, and the attribute of the area is the area attribute (in the above embodiment). Data corresponding to land attributes) and data representing area attributes are referred to as area attribute data (corresponding to land attribute data in the above embodiment).

It is explanatory drawing which shows the structure of the land data management system which concerns on this Embodiment. (A) is a figure showing a certain area on the map data based on the lot number map created as of January 1, 1987, (b) and (c) are the map data It is explanatory drawing which shows the structure of the network data produced | generated based on it. (A) is a diagram showing a part of the area on the map data based on the map of land identification created as of January 1, 1995. (b) and (c) are the map data. It is explanatory drawing which shows the structure of the network data produced | generated based on this. (A) is a figure showing a certain area on the map data based on the map of land identification created as of January 1, 2004. (b) and (c) are the map data. It is explanatory drawing which shows the structure of the network data produced | generated based on this. (A) is a figure showing a certain area on the map data based on the public map created as of June 15, 2004. (b) and (c) are the map data. It is explanatory drawing which shows the structure of the network data produced | generated based on it. It is explanatory drawing which shows the structure of the synthetic | combination network data which synthesize | combined several network data. It is explanatory drawing which shows the process of the land recognition means with respect to synthetic | combination network data. It is explanatory drawing which shows the structure of a network data verification means. It is explanatory drawing which shows the example of an edit plot and the test plot. It is explanatory drawing which shows the example of the map for a test | inspection. It is explanatory drawing which shows the process of the temporary node production | generation means with respect to the network data of an edit map. It is explanatory drawing which shows the process of the temporary link production | generation means with respect to the network data of an edit map. It is explanatory drawing which shows the process of the temporary node production | generation means for an inspection with respect to the network data of an inspection map. It is explanatory drawing which shows the process of the temporary link production | generation means for an inspection with respect to the network data of an inspection map. It is explanatory drawing which shows the process of the link direction setting means with respect to the network data of an edit map. It is explanatory drawing which shows the process of the link direction setting means and link direction setting covering means with respect to the network data of an edit map. It is explanatory drawing which shows the process of the link direction setting means and link direction setting covering means with respect to the network data of an edit map. It is explanatory drawing which shows the process of the link direction setting means and link direction setting covering means with respect to the network data of a test | inspection map. It is explanatory drawing which shows the temporary link produced | generated in the edit map outline. It is explanatory drawing which shows the temporary link for a test | inspection produced | generated in the map for a test | inspection. It is explanatory drawing of control of the order which edits and test | inspects each map by the map display process order control means. It is explanatory drawing showing the land where a brush boundary line and a ground-boundary line do not correspond.

Explanation of symbols

A Land data management system C Client computer S Server computer 10 Network data communication means 12 Network data comparison means 14 Network data synthesis means 16 Network data editing means 18 Network data checking means 20 Land recognition means 23 Map reading / editing means 24 Network data generation Means 25 Map processing order control means 26 Network data communication means 30 Duplicate data detection means 31 Link data unification means 32 Boundary consistency check means 34 Temporary node generation means 36 Temporary link generation means 38 Inspection map extraction means 40 Inspection Temporary node generation means 42 Inspection temporary link generation means 44 Link direction setting means 44a Initial direction setting means 44b Continuous direction setting means 46 Link direction setting covering means 52 54 inspection diagram Guo a map data b network data d integrated network data

Claims (25)

A land data management system for storing and managing land attributes of each land divided by predetermined land boundaries within a predetermined area,
Node data representing the node corresponding to the position of each intersection of the land boundary line, the link corresponding to each land boundary line connecting the intersections, the endpoint data for identifying the nodes at both end points, and each of the borders on both sides of the land boundary line storage means have a link data including land attribute data representing each land attributes land, storing network data consisting divided into a plurality of FIG Guo obtained by dividing the predetermined region,
When recognizing a range of land having a specific land attribute, the land attribute data representing the specific land attribute is represented as land attribute data of the land that touches one side, and represents the links that are continuous with each other at the end points represented by each end point data. Land recognition means for extracting link data and recognizing a range surrounded by the link represented by the extracted link data as a range of land having the specific land attribute ;
Network data editing means capable of editing the network data in map units;
Temporary node generating means for generating a temporary node at the dividing point of each link data divided at the boundary of the edited map outline in the edited map outline edited by the network data editing means;
Temporary link generation means for adding link data representing a temporary link connecting nodes and temporary nodes adjacent to each other on the boundary as link data belonging to the edit map,
From the predetermined area, an inspection outline extracting means for extracting an inspection outline surrounding the edited outline,
Inspection temporary node generation means for generating an inspection temporary node at a breakpoint of each link of the network data in the inspection map, which is divided at the boundary with the editing map;
Inspection temporary link generating means for adding link data representing a temporary link for inspection that connects a node located on the boundary and a temporary node for inspection to each other as link data belonging to the inspection outline;
By comparing the position information of each temporary link belonging to the edit map outline with the position information of each inspection temporary link belonging to the inspection map outline, the network data and edit map in the edit map outline at the boundary are compared. Land data management system characterized by comprising a boundary alignment checking means for checking the integrity of the bonding state of the network data Kakusoto. Each link data can include multiple types of land attribute data corresponding to multiple types of land boundary lines overlapping at the same position,
2. The land data management system according to claim 1, wherein the land recognition means recognizes a range of land having a specific land attribute for each type of land attribute data. 3. The land data management system according to claim 2 , wherein the land boundary line is a plurality of types of lines among a brush boundary line, a character boundary line, a ground boundary line, a land use boundary line, an administrative boundary line, and a route. The land recognition means is
One of the link data having the land attribute data representing the specific land attribute as the land attribute data of the land in contact with one side is extracted, and one of the end points represented by the end point data of the extracted link data is set as the start point and the other is set as the end point. Initial link setting means for setting each and setting the end point as a search point;
The search point is a start point of each other link data connected to the search point, each other end of each other link data is an end point of each other link data, and each other link data Attribute boundary search means for extracting link data having the specific land attribute from the start point toward the end point as land attribute data of the land contacting the same side as the link data extracted by the initial link setting means And
With the end point of the link data extracted by the attribute boundary search means as a new search point, the attribute boundary search means is repeated until the new search point matches the start point set by the initial link setting means. The land data management system according to any one of claims 1 to 3, wherein the continuous link data is extracted to recognize a range of land having the specific land attribute. Node data, link data, and land attribute data are specified in Article 17, Article 1 of the Real Estate Registration Act, Drawings specified in Article 24, Article 3 of the Real Estate Registration Act On the map attached to the land ledger, the map stipulated in Article 2, Paragraph 6 of the National Land Survey Act, and one or more types of maps in the location map stipulated in Article 6, Paragraph 2 of the Land Readjustment Registration Order The land data management system according to any one of claims 1 to 4 , wherein the land data management system is provided based on the described land boundary line and land attributes. Comprising network data synthesizing means for synthesizing at least a part of the contents of a plurality of network data to generate new network data and storing it in the storage means;
The network data synthesizing means sets the link data corresponding to the link at the overlapping position among the plurality of network data to be synthesized as one link data, and converts the link data into a plurality of link data as a basis. The land data management system according to any one of claims 1 to 5 , wherein each of the included land attribute data is included to synthesize the new network data. It comprises network data generating means for extracting land boundary lines from map data and generating node data corresponding to each intersection of the land boundary lines and link data corresponding to the land boundary lines connecting the intersections. The land data management system according to any one of claims 1 to 6 . Each link data, as described in any one of claims 1-7, characterized in that it comprises a disappearance time data indicating the time when the corresponding land boundary line has occurred when the data and / or disappearance indicate when generating Land data management system. The land recognizing means obtains link data representing the continuous links from only link data corresponding to land boundary lines existing at a specific time or period based on the occurrence time data and / or the disappearance time data. The land data management system according to claim 8 , wherein the land data management system is provided so as to be extractable. Based on the occurrence time data and / or the disappearance time data, link data corresponding to the land boundary line existing at the first time point or period, and link data corresponding to the land boundary line existing at the second time point or period; The land data management system according to claim 8 or 9 , further comprising network data comparison means for detecting a difference between the two. The storage means stores a plurality of network data corresponding to at least a part of the common area,
Wherein the plurality of network data between, by comparing at least a portion corresponding to the common region, any one of claims 1-10, characterized in that it comprises a network data comparison means for detecting the differences Land data management system described in the section. Each link data of at least one of the plurality of network data includes occurrence time data indicating a time when a corresponding land boundary line has occurred and / or disappearance time data indicating a time of disappearance,
The network data comparison means includes link data corresponding to a land boundary line existing at a specific time or period in the network data based on the occurrence time data and / or the disappearance time data of the network data, and another network. Land data management system of claim 1 1, wherein the detecting the difference from the link data of the data. The link data including the occurrence time data and / or the disappearance time data is provided corresponding to land boundary lines represented on a plurality of maps created at different time points,
The occurrence time data is data representing a creation time of a map in which a corresponding land boundary line has appeared, and the disappearance time data is data representing a creation time of a map in which the corresponding land boundary line has disappeared claim 10 or 1 2, wherein the land data management system. The network data is divided into a plurality of maps that divide the predetermined area,
The network data comparing means, FIG Guo units, land data management system of any one claim of claims 10 to 1 3, characterized in that for comparing the network data. Each link data corresponding to a land boundary line in contact with the land having the same land attribute in the editing map and the inspection map is connected to the land on the same side from the start point to the end point. Link direction setting means for setting one of the end points represented by the end point data of each link data as the start point and the other as the end point,
Link direction setting covering means for executing the link direction setting means for each link data in the edit map and the inspection map, and setting the start point and the end point for each link data; Comprising
The boundary consistency inspecting means compares the start point and end point of each temporary link belonging to the editing map outline with the start point and end point of each inspection temporary link belonging to the inspection map outline. The land data management system according to any one of claims 1 to 14 , wherein the consistency of the network data at the boundary of the network is inspected. The link direction setting means includes
One of the link data in which the setting of the start point and the end point related to the link direction setting process is not set in the edit map and the inspection map is extracted, and the end point represented by the end point data of the extracted link data is extracted. Initial direction setting means for setting one as a start point and the other as an end point, and setting the end point as a search point;
The search point is a start point of each other link data connected to the search point, each other end of each other link data is an end point of each other link data, and each other link data The land attribute data of the land touching the same side as the extracted link data from the start point to the end point is the same as the land attribute data of one side of the link data extracted by the initial direction setting means. Continuous direction setting means for extracting link data as data,
Using the end point of the link data extracted by the continuous direction setting means as a new search point, the continuous direction setting means is repeated until the new search point matches the start point set by the initial direction setting means. The land according to claim 15, wherein the start point data and the end point data of the link data having the same land attribute data are set so that the land touches the same side from the start point toward the end point. Data management system. Duplicate data detection means for detecting a plurality of link data whose positions overlap from the network data in the edited map edited by the network data editing means;
A plurality of overlapping link data detected by the duplicate data detecting means is used as one link data, and each piece of land attribute data included in a plurality of link data as a basis is included in the one link data. The land data management system according to any one of claims 1 to 16, further comprising a link data unification unit. The network data is stored in storage means of a server computer,
A plurality of client computers read out the network data from the server computer in the editing map unit, and the network data editing unit, the temporary node generation unit, the temporary link for the network data in the editing map unit Claims: The means for generating, the inspection temporary node generation means, the inspection temporary link generation means, and the boundary consistency inspection means are realized, and each means is distributedly processed by a plurality of client computers. The land data management system according to any one of Items 1 to 17.   When editing the network data by the network data editing means and inspecting by the boundary consistency checking means, the plurality of outlines are each edited as the editing outline and skipped one by one. A map processing order control means is provided for controlling the order of editing and inspecting each contour so that after editing, the unedited contours between the contours that have been edited and inspected are edited and inspected. The land data management system according to claim 18, wherein: Storage means for storing network data divided into a plurality of map units, including node data representing nodes in the virtual space and link data representing links connecting the nodes;
Network data editing means capable of editing the network data in units of the map;
Boundary consistency checking means for checking the consistency of the connection state between the network data in the edited map outline and the network data outside the edited map outline at the boundary of the edited map outline edited by the network data editing means. A network data verification system,
Temporary node generating means for generating a temporary node at the dividing point of each link that is divided at the boundary of the network data in the edit map,
Temporary link generation means for adding link data representing a temporary link connecting nodes and temporary nodes adjacent to each other on the boundary as link data belonging to the edit map,
An inspection outline extracting means for extracting an inspection outline surrounding the edited outline from the virtual space;
Inspection temporary node generation means for generating an inspection temporary node at a breakpoint of each link of the network data in the inspection map, which is divided at the boundary with the editing map;
Inspection temporary link generation means for adding link data representing inspection temporary links connecting the nodes located adjacent to the boundary and inspection temporary nodes as link data belonging to the inspection outline; ,
The boundary consistency inspecting means compares the positional information of each temporary link belonging to the edited outline and the positional information of each temporary link for inspection belonging to the inspection outline, thereby matching the consistency of the joint state. A network data verification system characterized by inspecting. The network data includes area attribute data representing an area attribute of an area surrounded by a plurality of links,
Each link data includes end point data for specifying nodes at both end points,
Link data representing a link that touches an area having the same area attribute in the editing map and the inspection map so that each link data touches the area on the same side from the start point toward the end point. Link direction setting means for setting one of the end points represented by the end point data of each link data as a start point and the other as an end point;
Link direction setting covering means for executing the link direction setting means for each link data in the edit map and the inspection map, and setting the start point and the end point for each link data; Comprising
The boundary consistency inspecting means compares the start point and end point of each temporary link belonging to the editing map outline with the start point and end point of each inspection temporary link belonging to the inspection map outline, thereby comparing the edit map outline. 21. The network data verification system according to claim 20, wherein consistency of the network data at a boundary of the network is checked. Each link data includes the area attribute data representing each area attribute of each area that touches both sides of the link represented by the link data,
The link direction setting means includes
One of the link data in which the setting of the start point and the end point related to the link direction setting process is not set in the edit map and the inspection map is extracted, and the end point represented by the end point data of the extracted link data is extracted. Initial direction setting means for setting one as a start point and the other as an end point, and setting the end point as a search point;
The search point is a start point of each other link data connected to the search point, each other end of each other link data is an end point of each other link data, and each other link data The area attribute data of the area that touches the same side as the extracted link data from the start point toward the end point, the same area attribute data as the one side area attribute data of the link data extracted by the initial direction setting means Continuous direction setting means for extracting link data as data,
Using the end point of the link data extracted by the continuous direction setting means as a new search point, the continuous direction setting means is repeated until the new search point matches the start point set by the initial direction setting means. The network according to claim 21, wherein the start point data and the end point data of the link data having the same area attribute data are set so that the areas touch the same side from the start point toward the end point. Data review system. Duplicate data detection means for detecting a plurality of link data whose positions overlap from the network data in the edited map edited by the network data editing means;
A plurality of overlapping link data detected by the duplicate data detecting means is used as one link data, and each area attribute data included in the plurality of link data as a basis is included in the one link data. The network data verification system according to any one of claims 20 to 22, further comprising a link data unification unit. The network data is stored in storage means of a server computer,
A plurality of client computers read out the network data from the server computer in the edit map unit, and the network data editing means, the temporary node generating means, and the temporary link for the network data in the edit map box A plurality of client computers perform distributed processing by realizing a generation unit, the inspection temporary node generation unit, the inspection temporary link generation unit, and the boundary consistency inspection unit. Item 24. The network data verification system according to any one of Items 20 to 23.   When editing the network data by the network data editing means and inspecting by the boundary consistency checking means, the plurality of outlines are each edited as the editing outline and skipped one by one. A map processing order control means is provided for controlling the order of editing and inspecting each contour so that after editing, the unedited contours between the contours that have been edited and inspected are edited and inspected. 25. The network data verification system according to claim 24.

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