JPH06314061A - Management system for element of drawing for geographic information processing system - Google Patents

Abstract

PURPOSE:To increase the number of the elements which can be handled within the one drawing and eventually the number of the elements which can be handled within the system and to enable the smooth execution of management of respective drawings and the respective elements included in these drawings even if this system is applied to a distributed data base system by specifying the respective elements within the system by the drawing numbers within a matrix and element identification numbers. CONSTITUTION:This management system includes a means 1 for controlling processing for specifying the one element from the many drawings constituting geographic information and a storage means 2 previously stored with the information on the unique drawing number within the system for each of the respective drawings. The drawing number is expressed by information of respectively five digits instructing the position numbers in a direction X and direction Y on coordinates corresponding to the entire drawing. For example, the drawing number is indicated by 0000200003 if the position number in the direction X is 2 and the position number in the direction Y is 3. The plural drawings are classified to a unit of assemblage (matrix) consisting of a respective number of the drawings in such a manner and the correspondence of the respective drawings and the elements is so related that the elements ID are unique within the respective matrices.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a geographic information processing system, and more particularly to a plurality of drawings managed in a geographic information processing system used by a local government, an electric power company, etc. Technology useful for effective management.

[0002]

2. Description of the Related Art In the conventional geographic information processing system, FIG.
As shown in, the geographical information managed by the system is
It is composed of a plurality of elements (drawing 1, element 2, ...) Included in each drawing divided into a plurality of drawings (drawing A, drawing B, ...). Therefore, in geographic information processing, it is necessary to give each element a unique identification number (hereinafter referred to as an element ID) in the system in order to distinguish each element from other elements in the system.

This element ID is uniquely given to each drawing in order to distinguish each drawing from other drawings in the system as shown in FIG. 7B, for example. And an "in-drawing element identification number" uniquely assigned to each element in order to distinguish each element from other elements in the drawing. In this way, in the conventional system, the correspondence between the element and the drawing is the element ID
Were related to be "unique" within the system.

[0004]

In the above-mentioned conventional method, since the element ID has to be a unique value in the system, if the number of digits that determines the number of element IDs is constant, all elements in the system are The number of digits in the drawing number used to identify the drawing needs to be set relatively large. For example, in the example of FIG. 7B, since the drawing number and the element identification number in the drawing both use 5 digits, the maximum value of the number of element IDs is limited to "99999" which can be expressed by 5 digits. .

As described above, in the conventional method, since the element ID is a unique value in the system, its limit value (that is,
The number of elements that can be handled by the system) will be determined by the maximum value of the variables used. Therefore, in consideration of the fact that a geographic information processing system generally has to handle a huge number of elements, the above limit value often becomes a problem.

For example, if a plurality of workstations are LA
When applied to a system form (distributed database system) in which databases are distributed to each workstation (distributed database system) that are connected to each other by N (local area network), the geography exceeds the capacity that can be processed by the database of each workstation. When information (that is, the number of elements) is processed, or when geographical information exceeding the capacity that can be processed is transferred between workstations, processing and management of geographical information cannot be normally performed in each workstation. There was an inconvenience.

In view of the above problems in the prior art, an object of the present invention is to increase the number of elements that can be handled in one drawing in the geographic information processing system, and thus the number of elements that can be handled in the system, and to apply them to each drawing and even when applied to a distributed database system. It is to enable management of each element included in the drawing without hindrance.

[0008]

In order to solve the above problems, according to the present invention, a plurality of drawings forming geographical information in a geographical information processing system are classified into a unit of a matrix composed of a predetermined number of drawings. The elements of the drawing are managed by associating the correspondence between each drawing and the element so that the element ID is “unique” in each matrix.

Therefore, according to the present invention, as shown in the principle diagram of FIG. 1, in a system in which elements included in each drawing and included in each drawing are processed as geographical information,
In the system represented by the control unit 1 for controlling the process for specifying one element from all the elements included in the plurality of drawings and the information about the position on the coordinate corresponding to the plurality of drawings A storage means 2 in which information of a unique drawing number in the system is stored in advance for each drawing, and the control means stores the information of the drawing number in the system of a drawing designated with respect to an element of interest. , And based on the information of the drawing number in the system,
The range of a collection or a matrix composed of a plurality of drawings including the designated drawing is determined, and a drawing number in the matrix unique to each drawing included in the matrix is determined, and the determination is performed. A geographical information processing system characterized in that each element in the system is specified by the drawing number in the matrix and the element identification number uniquely given to each element in each drawing included in the matrix. A method of managing elements of a drawing in is provided.

[0010]

FIG. 2 is a supplementary explanation of the principle structure of FIG. 1, in which (a) shows the concept of a "matrix" which is a feature of the present invention, and (b) shows a concrete form of the matrix. ing. In the figure, M represents a matrix composed of 3 × 3 drawings, and 1 to 9 represent drawing numbers in the matrix.

According to the configurations shown in FIGS. 1 and 2, there are drawings to which the same drawing number within the matrix is assigned when viewed from one system, but the drawing number within the matrix (1 9) are “unique”. Therefore, since the element IDs of all the elements included in the system can be changed from the conventional system unique to the matrix unique, the number of elements that can be handled in one drawing can be increased (compared to the conventional method). .
This makes it possible to manage each drawing and each element included in the drawing without any trouble even when applied to a distributed database system.

Details of other structural features and operations of the present invention will be described with reference to the accompanying drawings with reference to the following embodiments.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 schematically shows a system configuration to which the management system of elements of the drawing in the geographic information processing system according to the present invention is applied. In the figure, reference numeral 10 denotes a processing control unit, which has a function of controlling processing for specifying one element from all elements included in a plurality of drawings that make up geographical information. The specific processing content will be described later. Reference numeral 11 denotes a drawing management unit provided with a drawing management file (not shown).
Drawing information is stored for each of a plurality of drawings managed by this system. This drawing information is
Information of drawing name (for example, “A” and “B” in FIG. 2A), information of unique drawing number in the system, and coordinates for indicating where each drawing is located in the whole It contains information and.

As shown in FIG. 4, each drawing number is a 5-digit information (a total of 10 digits of information) indicating a position number in the X and Y directions on the coordinates corresponding to all the drawings.
Represented by For example, the X direction position number is "2"
If the Y-direction position number is "3", the drawing number is "00".
00200003 "(see FIG. 6). Returning to FIG. 3, reference numeral 12 denotes an element management unit provided with an element management file (not shown), in which the element information is stored in advance for all the elements included in each drawing for each drawing. Has been done. This element information is the element name information and
It includes information on element numbers that are unique within the drawing and information on coordinates that specify the position of each element in the drawing. Further, 13 is an input unit for giving an instruction of an operator inputted through a keyboard or the like to the processing control unit 10,
Reference numeral 14 denotes a display unit such as a CRT display for visually displaying drawing information to an operator under the control of the processing control unit 10. The contents of the drawing management unit 11 (drawing management file) and the contents of the element management unit 12 (element management file) are
The data is appropriately taken into the display unit 14 via the processing control unit 10 and displayed visually.

Next, the element identification processing by the system of FIG. 3 will be described with reference to the flowchart shown in FIG. The flowchart shown in the figure shows a process until one element is specified in the geographic information processing system in which a plurality of element IDs exist. First, in step 30, the operator gives an instruction to the process control unit 10 via the input unit 13 while looking at the display unit 14 with respect to the drawing (drawing name) including the desired element. Then, in step 31, the process control unit 10 instructs the drawing (drawing information).
Is taken out from the drawing management unit 11 (loaded).

At the next step 32, the processing controller 1
0 is the drawing number of the loaded drawing information (see FIG.
The matrix range (3 × 3 grid type in this embodiment) that can be processed by the drawing management unit 11 is determined based on the above (see FIG.
At this time, a unique number in the matrix (drawing number in the matrix) is assigned to each drawing (in this case, 3 × 3 = 9 sheets) included in the determined matrix. The drawing number in this matrix is determined based on the following calculation.

X = MOD (X direction position number, n) IF (x.EQ.0), x = ny y = MOD (Y direction position number, n) IF (y.EQ.0), y = n matrix Inner drawing number = x + (y−1) * n (1) where n is the length of one side of the matrix (“3” in this embodiment), and MOD is the position number in each direction. Represents the remainder when divided by n. By the calculation of the equation (1), the correspondence between the drawing number in the system and the drawing number in the matrix is related as shown in FIG.

This guarantees the element ID "unique" in the matrix in step 33.
In the next step 34, the processing control unit 10 loads the next drawing (drawing information) from the drawing management unit 11. Then, in step 35, the processing control unit 10
It is determined whether the drawing exists in the matrix (that is, in the matrix including the drawing loaded in step 31) (YES) or not (NO). Judgment result is NO
In the case of, the process proceeds to step 36, where the loading of the drawing is canceled, and then the process returns to step 34. On the other hand, if the decision result in the step 35 is YES, the process advances to a step 37 to confirm the loading of the drawing.

At the next step 38, the processing controller 1
0 determines whether there is another drawing to be loaded (YES) or not (NO). If the determination result is YES, the process returns to step 34, and if the determination result is NO, the process proceeds to step 39. In step 39, the processing control unit 10
Performs various types of search and update processing, and thereafter, this flow becomes "end".

As described above, according to the present embodiment, the following advantages can be obtained by performing the element specifying process as shown in the flowchart of FIG. If the number of element IDs is set to "I [integer] * 4 [bytes]", one digit of that is assigned to the sign (+,-), and the maximum value is about 2 ³¹ . 2 billion (10
Digit).

In the conventional method, the element ID has a unique value in the system, so that the element ID has a structure as shown in FIG. 7B. In this example, the drawing number and the element identification number in the drawing both use 5 digits, so the element ID
The maximum value of the number of is "99999" which can be expressed by 5 digits. On the other hand, in this embodiment, the element ID has a unique value in each matrix, and the number of drawings in each matrix is naturally smaller than the total number of drawings in the system.
The number of digits of the identification number (drawing number in matrix) used for distinguishing the drawings in each matrix can be relatively small as shown in FIG. 7 (a). In the present embodiment, since the matrix is 3 × 3, it is sufficient for the drawing number in the matrix to be one digit, and the maximum value of the element identification number in the drawing is “999999999” which can be expressed in nine digits. That is, the number of elements that can be handled in one drawing is increased by four digits as compared with the conventional type (see FIG. 7B).

As described above, by changing all the element IDs included in the system from the conventional unique in the system to the unique in the matrix, the number of elements that can be handled in one drawing, and thus the number of elements that can be handled in the system, can be increased. Therefore, even when applied to a distributed database system, it becomes possible to manage each drawing and each element without any trouble.

[0023]

As described above, according to the present invention, the number of elements that can be handled in one drawing in a geographic information processing system can be increased, and even when applied to a distributed database system, each drawing and each drawing The elements can be managed efficiently without any hindrance.

[Brief description of drawings]

FIG. 1 is a principle diagram of a management system of drawing elements in a geographic information processing system according to the present invention.

FIG. 2 is a supplementary explanatory diagram of FIG.

FIG. 3 is a block diagram schematically showing a system configuration to which the element management system of the drawing according to the present invention is applied.

FIG. 4 is an explanatory diagram of contents of drawing numbers.

5 is a flowchart showing an example of element identification processing by the system of FIG.

FIG. 6 is a diagram showing a correspondence relationship between a drawing number in a system and a drawing number in a matrix.

FIG. 7 is an element ID determined based on the processing shown in FIG.
It is a figure which contrasted and showed with the case of the element ID in a conventional system.

FIG. 8 is a diagram showing a correspondence relationship between drawings and elements in the conventional method.

[Explanation of symbols]

1 ... Control means (controls a process for specifying one element from all elements included in a plurality of drawings) 2 ... Storage means (represented by information regarding positions on coordinates corresponding to a plurality of drawings) Stores unique drawing number information within the system)

Claims (1)

[Claims] 1. In a system in which elements included in each drawing are divided into a plurality of drawings and processed as geographical information, processing for specifying one element from all elements included in the plurality of drawings. Control means (1) for controlling the storage means, and storage means in which information of a drawing number within a system that is unique in the system represented by information about positions on coordinates corresponding to the plurality of drawings is stored in advance for each drawing. (2) The control means retrieves information about the drawing number within the system of the drawing designated for the element of interest from the storage means, and specifies the drawing number within the system based on the information about the drawing number within the system. Determines the range of a group of drawings including drawings, that is, the range of a matrix, and is unique within the matrix for each drawing included in the matrix. The drawing number in the matrix is determined, and by the determined drawing number in the matrix and the element identification number uniquely given to each element in each drawing included in the matrix,
A drawing element management method in a geographic information processing system characterized in that each element in the system is specified.