JP2004070174A - Map information display system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a map information display system which enables a client side to customize a display or non-display of map layers, a graphic display of attribute items, and a character display by using an image data map transfer system and a program for the same. <P>SOLUTION: The map information display system is provided with a map graphical information forming means for forming map graphical information and item information relating to the map graphical information in accordance with map information of an assigned range, a set information forming means for forming map display set information including the layers used for the map display and the map graphical display in accordance with the item information, and a map image forming means for forming map image information obtained by forming the map graphical information in accordance with the map display set information and converting the map graphical information. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a map information display system for searching and browsing map information and information related to the map information, the map information being capable of changing the display mode of the map contents according to the user's needs using the Internet or an intranet. The present invention relates to a display system and a program thereof.
[0002]
[Prior art]
The map information system (GIS) converts graphic information representing administrative boundaries such as municipalities and geographical features such as roads, railways, rivers and buildings by vector graphics into attribute information related to the graphics, for example, municipalities. This system can be managed in relation to population, area, road type such as expressways, national roads, major local roads, and general roads, and width. The GIS system manages this graphic information in sections called layers, and when creating a single map, these layers are combined and the data of each layer is displayed according to the user's purpose. A style (called a diagram) is applied. Taking a house map as an example, layers such as town streets, streets and buildings are combined. A scheme such as displaying is given. Further, in maps such as land use situation diagrams, building use diagrams, and building structure hierarchy diagrams used in city planning, etc., a diagram is given for each attribute data using attribute information of land and buildings.
[0003]
In recent years, the number of GISs that can be used on the Internet or intranet WEB has been increasing. In a map information system using this WEB, a typical method of transferring map data from a server to a client is a vector map data transfer. There are two methods, a method and an image map data transfer method.
[0004]
The vector map data transfer method is a system that transmits vector map data stored in a server and attribute data associated with the vector map data to a client as it is. On the client side, by having a GIS engine (program) for processing the received data, the user can customize the display format of the map contents to suit the purpose of use.
[0005]
However, since the GIS program is heavy (large) and the map information that can be freely processed is sent from the server, there is a security problem that the map information is copied and diverted. Further, when the wide-area map data and the high-density map data are transmitted in the vector format from the server side to the client side, there is a problem that the data amount increases and the response is remarkably deteriorated.
[0006]
On the other hand, in the image map data transfer method, a map image in a requested range is created from vector map data stored in a server and attribute data associated with the vector map data and transmitted to a client. It is. Therefore, the map data is imaged only in the requested range portion and only this information is transmitted to the client side, so that there is no restriction on security. Even in the case of a wide-area map or a high-density map, the main part of the transmitted data is a map image of a fixed size, and since the amount of transmitted data is relatively small and the data amount is constant, the system response Is also relatively constant. However, the client can only browse the map image created in the display style prepared on the server.
[0007]
[Problems to be solved by the invention]
Therefore, an object of the present invention is to use an image data map transfer system that can be a light (small) client system without fear of plagiarism of vector map data, and to provide an equivalent to a vector map data transfer system having an advanced GIS function. An object of the present invention is to provide a map information display system in which a client has a map display customizing function.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a map information display system having the following configuration.
[0009]
In the map information display system according to the present invention, an information receiving unit that receives display item information related to a map whose range is specified, a setting information creating unit that generates display setting information including diagrammatic setting information based on the display item information, A transmitting unit for transmitting the display setting information, a receiving unit for receiving a map image created according to the display setting information, and a unit for displaying the received map image are provided.
[0010]
In the setting information creating means, a layer to be displayed is selected based on the display item information, a graphic display item or a character display item of the selected layer is selected, and the graphic display item or the character display item is set in advance. Display setting information using a graphic diagram or a character diagram is generated.
[0011]
Further, the setting information creating means selects a layer to be displayed based on the display item information, selects a graphic display item or a character display item of the selected layer, and specifies the graphic display item or the character display item by the user. The display setting information in which a graphic diagram or a character diagram is set is generated.
[0012]
Further, it is possible to set the order of superimposing layers included in the display item information.
[0013]
When the layer is a point figure, the graphic diagram includes any one of symbol type information, pattern information, size information, color information, and transparency information. When the layer is a line figure, any setting of pattern information, size information, color information, and transparency information is included. When the layer is a surface graphic, the setting includes any of pattern information, color information, and transparency information for the inside of the surface, and includes pattern information, size information, and color information for the surface boundary. Information and transparency information, and further includes setting of a classification section or a rank section and setting of the classification section name or the rank section name.
[0014]
The character diagram includes one of font information, size information, color information, and arrangement information.
[0015]
Further, the display setting information is given a name and stored, and when the map information display system is activated, the stored display setting information is transmitted as initial display setting information.
[0016]
Further, in the map information display system according to the present invention, a display information creating means for creating display item information relating to a map whose range is designated, and a setting information creating device for creating display setting information including diagrammatic setting information based on the display item information Means, a map image creating means for creating a map image from vector map information relating to the map according to the display setting information, and a map image displaying means for displaying the map image, wherein the display item information is set information via a communication network. The information setting information is transmitted to the map image creating means via the communication network, and the map image is transmitted to the map image display means via the communication network.
[0017]
The setting information creating means selects a layer to be displayed based on the display item information, selects a graphic display item or a character display item of the selected layer, and sets the graphic display item or the character display item in advance. The display setting information using the graphic diagram or the character diagram is generated.
[0018]
Further, the setting information creating means selects a layer to be displayed based on the display item information, selects a graphic display item or a character display item of the selected layer, and selects a user for the graphic display item or the character display item. Display setting information in which a unique graphic diagram or character diagram is set is generated.
[0019]
Further, the order in which the layers included in the display item information are superimposed is set.
[0020]
When the layer is a point figure, the graphic diagram includes any one of symbol type information, pattern information, size information, color information, and transparency information. When the layer is a line figure, any one of pattern information, size information, color information, and transparency information is included. Also, when the layer is a plane figure, it includes any one of pattern information, color information, and transparency information for the inside of the plane, and includes pattern information, size information, and color information for the plane boundary. , And the setting of the classification section or the rank section, and the setting of the classification section name or the rank section name.
[0021]
The character diagram includes one of font information, size information, color information, and arrangement information.
[0022]
Further, the display setting information is named and stored, and the stored display setting information is set as the initial display setting information.
[0023]
The map image creating means creates a map image reflecting the display setting information corresponding to the display scale.
[0024]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of a map information display system that enables a map display to be set according to a user's purpose of use in a map information system employing an image map data transfer method using an Internet or an intranet network will be described below with reference to the drawings. explain.
[0025]
FIG. 1 is a diagram showing the overall configuration of related information and the flow of processing, centering on a server that performs processing of the map information display system of the present invention. The server includes an application server 4 storing a map information display system program (GIS engine), a database server (DB server) 5 storing information related to the map information display system, and a WEB for managing connections with the network 2. It is composed of a server 3. The web server may include middleware for distributing the load of a plurality of application servers. The client system 1 is connected to a network 2 such as the Internet or an intranet, and is used by a user for setting map display setting instruction information 7 and displaying a map.
[0026]
The database (DB) storing the map information which is the basis of the present system is the map DB 14 and the diagram / symbol image DB 15. The map DB 14 stores information expressing vector map graphics and attribute information related to the map graphics. The schema / symbol image DB 15 stores map schema information and symbol images, such as images assigned to facilities and target objects. , Is housed. Further, there are a user management DB 12 and a layer / data item management DB 13 for managing these DBs.
[0027]
The user management DB 12 stores a user ID and a password of a user who has contracted to provide map information, and manages client access. The layer data item management information DB 13 includes layer management information related to map display and server-side display setting information. The layer management information is a collection of contents corresponding to the layer definition of the map DB 14 and the item definition of the attribute information. The default display / non-display setting and the default value of the display limit scale are written for each layer. . On the other hand, in the server-side display setting information, predetermined graphic settings necessary for expressing figures and characters of each layer are written.
[0028]
In these configurations, the flow of information when the user instructs to change the map display setting is as follows.
[0029]
First, the client sets instruction information 7 necessary for changing the map display setting. The display setting instruction information 7 is transmitted to the server via the network together with the user ID and the password 10. Based on this setting instruction, the application server 4 refers to the layer / data item management DB 13, acquires the requested map data from the map DB 14, and uses the diagram information acquired from the diagram / symbol DB 15 for the map data. To draw. Drawing is performed for each layer, and a process is performed in which this drawing data is sequentially superimposed to create one requested map. The processing of the map information so far is performed using vector map information, and converts the vector map information into a map image before transmitting the map information to the client side. Together with the map image and the map range 17 based on the map coordinates, the layer information and the schematic information 16 are transmitted to the client system 1.
[0030]
FIG. 2 is a diagram showing the layer management information.
[0031]
In the layer management information shown in FIG. 2, the layer name, the graphic type, the data item name, and the data type reflect the definition contents of the map DB.
[0032]
The layer display column is a column in which whether or not to display a designated layer is set, and the superposition order column is a column in which the order of superposition of each layer is set when the layers are displayed. When OFF is set in the layer display field, all figures and characters related to the set layer are not displayed.
[0033]
Here, in the data type, "character" data is data that can be displayed as characters on a map as it is, such as the name of a municipal village, and "classification" data is displayed by assigning colors and display patterns for each classification on the map. The “numerical value” data is data that can be displayed by being classified according to the range of numerical values (referred to as rank classification) and by assigning colors and display patterns to each of the classifications in the same manner as the classification data.
[0034]
The rank division column is a column for identifying numerical data for which a rank division is set, and the item display column is a column for identifying which data item of the display target layer is to be used for display.
[0035]
Also, with respect to figures and characters, at a small scale, the map may be filled with figures and characters of the layer. Therefore, a display limit scale is determined for each layer.
[0036]
FIG. 3 is a diagram showing the contents of the graphic settings for each layer and each item in addition to the display settings described in FIG.
[0037]
Next, in order to more specifically understand how the contents of the map display setting described above are customized, the details of the setting operation performed on the client 1 will be described using the display screens of FIGS. 4 to 18. .
[0038]
FIG. 4 is an example of an initial screen on the client side displayed first when the program of the present invention is executed. Command buttons related to map display are arranged in an upper display section W1 of the screen X, a map is displayed in a display section W2 in the center on the right half, and buttons and displays for customizing display settings are displayed in a display section W3 in the left half center. There is a display setting change panel where are lined up. In the lower right display section W6, there is a message display bar for the user.
[0039]
First, a button for displaying a target map will be described. Since these functions are publicly known, only the outline will be described.
[0040]
If the startup display is not specified in advance, the whole area map is displayed in W2 as an initial value immediately after the system is started. The area search button F3 is used to request a map of a specific area from the application server by designating a name of an address, a station name, a target, or the like of the specific area, and to switch to a map of the specified area. When an area to be enlarged or reduced is designated on the displayed map and the enlargement / reduction button F5 is clicked, a scale change menu is displayed. When a required scale is selected from this menu, this instruction is transmitted to the application server, and the application server performs enlargement / reduction processing to the specified scale. This result is returned to the client as a map image, and the map display changes. The range enlargement button F4 is used for a request to enlarge and display a map of a range of a box having two points designated by a mouse as diagonals on the entire screen. The move button F6 is used for a request to move the display range of the map from the first point designated by the mouse on the map screen to the second point designated next. With these operations, a map of the target area can be displayed.
[0041]
Next, functions related to setting and registration of a map display targeted by the present invention will be described.
[0042]
First, there is a display setting registration / selection button F1 as a button used for registering a uniquely set display with a new name or selecting an already registered display setting. When the display setting registration / selection button F1 is clicked, a sub window W7 shown in FIG. 5 is displayed.
[0043]
After the user completes the operation of changing the setting of the map display, this setting can be saved and made reusable. When performing an operation of newly registering map display settings, the user selects a new display setting name registration button of H17, enters a name for the display setting in the box of H18, and presses a create button of H19. When a map is to be displayed using the display settings created and registered by the user before, the display setting name selection button H20 is set, and the required display settings are selected from the pull-down menu of H21. If the map display is to be automatically performed when the system is activated according to the selected display setting, check H22. The selection button H23 is pressed when transmitting the selected display settings to the server. To delete a display setting that has already been registered, a display setting name to be deleted is selected in H21, and an instruction for deletion is given by a button in H24. The button H25 is used to close the registration / selection sub-window W7.
[0044]
The overlay order button F2 in the upper part W1 of FIG. 4 is a button for designating the overlay order of the layers when the layers of the map graphic are displayed in an overlapping manner. When this button is pressed, a sub window W8 shown in FIG. 6 is displayed. In this sub-window, the order of superimposition of the currently displayed map layers is displayed. The layer name to be changed in the list displayed here is designated, and the upper and lower instruction buttons H26, H27 on the right side are designated. Instruct to move up and down with. When the setting is changed, an instruction to change the overlay is sent to the application server. As a result, the map display is changed in the application server in accordance with the instruction, and a single image is sent back to the client, and the map display on the right screen W2 of the client changes.
[0045]
In the map superimposition process in the application server, drawing is performed in order from the lower layer in the layer list illustrated in FIG. 6 and is superimposed on the previously drawn screen. Therefore, unless the upper layer is specified to be transparent, the lower layer becomes invisible behind the upper layer. Therefore, the order of superimposition may be such that a point graphic, a line graphic, and a plane graphic are generally superimposed in order from the top, and a figure having a higher priority is placed on top of the plane figures.
[0046]
Next, an operation method for changing the setting of the map display for the map of the area selected in the figure will be described with reference to FIGS.
[0047]
When a target area is selected using the buttons F3 to F6 in FIG. 4 and displayed on the right side of the screen, the screen X shown in FIG. 7 is displayed. If the original display setting has already been made, the display may be called up using the button of F1. A display section W3 in the left half of the screen X is a panel for performing display or non-display for each layer, various settings for graphic display, and various settings for character display.
[0048]
First, a case in which a default diagram prepared on the server side is used will be described.
[0049]
In this case, the combination of the layers to be displayed on the map and the setting of which attribute item of the display target layer is used for the display are the contents of the map display setting change.
[0050]
First, for each layer, a combination of layers is set by selecting whether or not to display the layer. This setting is performed by H1 and H8 of the display setting change panel W3 in FIG. Clicking on the H8 pull-down menu displays a list of layer names. Examples of layer names include municipalities, character towns, main roads, railways, various facilities, and landmarks. For example, one main road in the displayed list is selected. Subsequently, when the check box H1 on the left side is checked, an instruction is displayed to display the checked main road layer on the map, and an instruction is displayed when the check mark of H1 is removed. H1 is checked in advance for the layer displayed from the beginning. An instruction to add a layer other than the checked layer to the display or to hide the checked layer from the beginning is issued at H1. When a layer selection / change operation is performed, communication with the application server is performed, and information on the graphic setting of the graphic display and character display of the designated layer shown in FIGS. 2 and 3 and the map image in which the layer is changed Is sent to the client.
[0051]
Here, the setting of the layer display or non-display has priority over the setting of the graphic display or the character display. When the layer is not displayed, naturally, all the graphic display, the character display and the display of the non-display layer are performed. Schematics cannot be changed.
[0052]
Next, regarding the setting of attribute items used for display, the map information system has attribute information associated with the vector graphic over a large number of items. By assigning this attribute item as a graphic display item or a character display item, it becomes possible to display a graphic according to the attribute or display the attribute information itself as a character.
[0053]
Here, the change of the graphic display or the character display for the selected layer can be started from any of them. First, a case where the change is started from the graphic display will be described.
[0054]
The graphic setting of the graphic belonging to the specified layer can be changed by selecting the graphic display item of the specified layer in the display section W4. Clicking the graphic display pull-down menu button H9 displays a list of graphic display items belonging to the layer selected in H8. As an example of the graphic display item list, in the case of a layer of a main road, there are a road type, a ground / underground, a road structure, a width, and the like. Select one of the displayed lists. The display item setting of the figure can be set to display ON (display) for only one item in one layer. For this reason, when another display ON has already been set for the same layer, the display item newly set to display ON has priority, and the previously set display is set to OFF (non-display).
[0055]
After selecting the graphic display item, checking the left check box H2 gives an instruction to display a map according to the selected graphic display item and an instruction to hide the map when H2 is unchecked. H2 is checked in advance for the graphic displayed from the beginning.
[0056]
When the graphic display item is changed, communication with the application server is performed to obtain the graphic information corresponding to the graphic display item selected in H9 from the application server, and the display section W3 on the left side of the screen changes to the display of FIG. At the same time, the map display of W2 is also changed to the selected graphic display item and the map image based on the diagram.
[0057]
FIG. 9 shows a display example when the display setting on the application server side is selected in the next figure display item “above ground / underground” in the same layer.
[0058]
Next, the graphic setting change operation of the character belonging to the designated layer will be described.
[0059]
FIG. 10 shows a screen when the setting of the character display is changed.
[0060]
When the pull-down menu H12 of the character display item in the display section W5 is clicked, a list of character display items belonging to the layer selected in H8 is displayed. For example, in the case of the main road layer, a list of character items such as a road name and a road type is displayed. Select one of the item lists. Subsequently, if the check box H5 on the left side is checked, an instruction is given to display the data of the checked character item on a map, and if the check mark of H5 is removed, an instruction is given to hide the data.
[0061]
The character display is also set to display ON only one data item in one layer as in the case of the graphic display.
[0062]
These instructions are transmitted to the application server, and the application server changes the map display according to the instructions, returns the result to the client as a map image, and displays the result in the right display section W2.
[0063]
Next, an example of a case where original settings are made for graphic display or character display will be described with reference to FIGS.
[0064]
Up to the combination of the layers to be displayed on the map, and the selection setting of the graphic display item and the character display item of the display target layer, it is the same as in the case of using the server-side default graphic. This is performed by pressing the "setting change" button H10 on the display setting change panel W3. The screen on which the figure of the layer is displayed differs depending on the type of point, line, or surface. If the type of figure is a point, the screen shown in FIG. 11 is displayed. The currently set values are displayed in the upper portions H30 to H36 of the screen, and items whose diagram can be changed are displayed in the lower portions H37 to H42.
[0065]
The layer name column H30 shows the layer name selected in H8 of FIG. 7, the data item column H37 shows the graphic display item name selected in H9 in FIG. 7, and the data type column H39 shows the data corresponding to the data item name. The type of the type is displayed. When the data is classified data, "classification" is displayed. When the data item is a numerical value, "numeric value" is displayed. If there is a unit in the numerical value, the unit is displayed in H40.
[0066]
The classification display of H38 includes a classification diagram and a rank diagram, and any one can be selected. Classification charts are provided with a classification code for each figure display item, and color classification for this classification code is specified.Rank charts are used to classify numerical data of attributes in numerical ranges and display them in different colors by rank. used. In the initial state, when the data type is “classification”, all the classification codes are displayed in the “classification character or rank upper limit” column of H42, and the name for this classification code is displayed in the “legend display name” column. . In the ranking, the maximum value to the minimum value are classified into 10 levels.
[0067]
The tab of H41 exists only in the case of a point graphic. This is because three types of settings, such as an image symbol, a vector symbol, and a character symbol, can be set as a diagram for a point graphic.
[0068]
The image symbol is an icon as shown in FIG. 12A, the vector symbol is a map symbol as shown in FIG. 12B, and the character symbol is as shown in FIG. It uses symbols contained in characters. Here, the color and size of the vector symbol of FIG. 12B and the character symbol of FIG. 12C can be changed, and the color and size of the image symbol of FIG. 12A are fixed.
[0069]
To change the "classification character or rank upper limit" column of H42, change the numerical value of the corresponding item, and to change the "legend display name" column, enter the name to be changed in the corresponding item. The example shown is a classification diagram. When a box of an item to be changed is specified and clicked in the point type column, a display pattern corresponding to the type specified in H41 is displayed. Examples of this display pattern are shown in FIG. 12A for an image symbol, FIG. 12B for a vector symbol, and FIG. 2C for a character symbol, and an appropriate graphic display can be selected from these. When a box of an item to be changed is designated and clicked for a color by the same operation, a color palette W13 shown in FIG. 13 is displayed, and an appropriate color can be selected from this. For the size and transparency, you can enter the values you want to change in the corresponding fields. Since the color and size of the image symbol are fixed, the request to change these items is invalid.
[0070]
When it is necessary to add a classification or a rank, a line to be added is specified, data is entered in an item to be added, and an “add” button H43 is pressed. On the other hand, when a graphic item is to be deleted, a line to be deleted is designated, and then a "delete" button H44 is pressed.
[0071]
When the “setting” button H45 is pressed after the above setting operation is completed, the screen in FIG. 11 is closed, and the setting data is transmitted to the application server. The application server changes the graphic display according to the instruction, returns a map image including the result to the client, and changes the map image to the one set.
[0072]
The “close” button H46 is used to stop the setting operation, close the setting screen of FIG. 11, and return to the original screen of FIG. The button of “restore” H47 is used to cancel the originally set settings and return to the state before the setting without closing the setting screen.
[0073]
FIGS. 14 and 15 show screens when the same graphic change is performed on the line figure layer, and FIGS. 16 and 17 show cases where the same graphic change is performed on the plane figure layer.
[0074]
Change Operation Screen for Line Figure The setting procedure in FIGS. 14 and 15 is almost the same as that for the point figure in FIGS. 11 to 13. For the line figure, a list of display patterns is displayed as shown in FIG. , And select an appropriate one from these.
[0075]
FIG. 16 shows the same change operation screen for a plane figure up to the layer setting display H30, the data item display H37, and the unit H40. Although the figure is an example of a rank diagram, the column of “classification character or rank upper limit value” in the display setting portion H42 has an upper limit when the numerical data of the data item H37 is classified into the range of the lower limit value and the upper limit value. Use the value as a code value. For a surface figure, a fill inside the surface and a diagram of the surface boundary line can be set. The pattern setting of the filling is performed by H42. As the fill pattern, an appropriate one is selected from a list of display patterns as shown in FIG. 17, and the color and transparency are the same as those described for the dot figure. In particular, by setting the transparency to be high, there is an effect that a layer lower in the overlapping order can be made visible. Schematic setting of a surface boundary line is performed in the same manner as in the case of a line figure, and is performed by H53 to H57.
[0076]
Next, an example of a screen displayed when a unique graphic change setting is performed for a character display item will be described with reference to FIG.
[0077]
When the “change settings” button H13 in FIG. 7 is pressed, the screen shown in FIG. 18 is displayed. The selected layer name H30 and the character display scales H31 and H32 are displayed at the top of the screen, and the items that can be set for character display are displayed at the bottom H59 to H72.
[0078]
Items that can be set for character display are font H59, size H60, and color H61, and furthermore, display positions for the figure of the specified layer, that is, upper, center, and lower (H62), and vertical writing, horizontal writing, and along the line. “Writing style” (H63) can be set. The font H59 and the character size H60 of the character display method are selected from the pull-down menu. For the color H61, when this item is clicked, a color palette similar to that shown in FIG. 13 is displayed, and an appropriate color is selected here. The display position of the character is also selected from the pull-down menu of the items H62 and H63. When the “setting” button H45 is pressed after these settings are completed, the screen in FIG. 18 is closed and communication with the application server is performed. The application server performs a graphic change process of displaying characters on a map in response to these instructions, and returns a result of the change to the client as a map image. This result is displayed in the display section of the right half W2 in FIG.
[0079]
The button H46 is used to cancel the character display setting halfway and close the screen of FIG. The button H47 is used to cancel the diagram setting which has been set independently without returning to the setting screen without closing the setting screen.
[0080]
The graphic setting of character display can be changed without changing the graphic setting of graphic display, or the graphic setting of graphic display can be changed after changing the graphic setting of character display. Further, the change of the schematic setting made here can be saved and named as unique display setting information on the client side by the display setting registration / selection button F1, and can be taken out and used at any time as a map image customized for the client.
[0081]
Here, H3, H4, H6, and H7 in FIGS. 7 to 10 are display columns indicating whether or not a unique graphic is set for the graphic (character) display of the layer. If the original diagram is used, H4 and H7 are checked and displayed. If the server-side default diagram remains, H3 and H6 are checked and displayed. That is, in the display setting information stored by the display setting registration / selection button F1, for example, a unique graphic is set only for the road type graphic display item of the main road layer, and the other layers use the server-side already set graphic. In such a case, when a map image is displayed by the display setting, the setting status of the diagram can be confirmed.
[0082]
Next, the contents of communication between the client 1 and the application server 4 will be described with reference to a processing flow.
[0083]
FIG. 19 shows the contents of communication processing at the time of initial activation of the client 1. When the client 1 is started, the client 1 first accesses the web server 3 (step S1), and requests the client 1 to download a necessary system file (step S2). In response, the web server 3 returns the requested file to the client 1 (step S3), and the client 1 reads the system file sent from the web server 3 (steps S4 and S5).
[0084]
Subsequently, in FIG. 20, when the client 1 does not have a display designation at the time of activation, the client 1 sends an initial map image to be displayed immediately after the activation process of the client 1 and a request command for setting items to the application server 4 (step S7). The application server 4 collects layer / item information, collects setting information for initial display, sets whole map information to be displayed first, creates a whole map image from these information, and displays a map image range to be displayed. Is transmitted to the client 1 together with the coordinates (step S8). Upon receiving this information, the client 1 displays the map image of the entire area based on the initial display setting, and the layer / item can be selectively displayed (step S9).
[0085]
FIG. 21 is a diagram showing a flow of a communication process for displaying an enlarged map of a target area from the entire map displayed in FIG. In the client 1, selection of a scale and setting of a movement range are performed by an enlargement / reduction instruction (step S12). Upon receiving this setting, the application server 4 processes the requested map display, such as the scale and the movement range, creates image information to be displayed on the client 1, and recalculates the coordinate values of the map image range to be displayed. Is transmitted to the client 1 (step S13). The client 1 that has received this information displays the received map image (step S15).
[0086]
FIG. 22 is a diagram showing the flow of information between the client 1 and the application server 4 when changing the graphic display or the character display.
[0087]
In the client 1, the user sets whether to display a layer or not (ON or OFF), selects a graphic display item or a character display item of a specified layer, or sets a graphic setting for a unique graphic display or character display. A change request is issued (step S16).
[0088]
The contents of these settings are reflected in various commands to the server, and a request for a layer / item and a request for diagram information of the layer / item are transmitted (step S17).
[0089]
The application server 4 collects the requested layer / item and its schema information from the database server 5, and performs the process of creating the legend information and the map image based on the schema information in the application server 4 (step S18), and changes The processed layer / item information and graphic / character graphic information are transmitted to the client 1 together with the legend information and the map image (step S19). The setting change process for each of the layer, the item, and the diagram information is performed for each changed item by performing the above-described setting change procedure and communicating with the server, and is repeatedly performed until all the setting change designation is completed ( Steps S16 to S19).
[0090]
In order to reuse these setting items later, setting information such as display or non-display of the layer, graphic display and character display of the layer can be saved in the client as a display setting instruction file with a name. (Step S20).
[0091]
FIG. 23 is a flowchart showing a map display process at the initial stage of client activation.
[0092]
First, the presence / absence of the display setting name list of the client 1 is checked (step S52). If yes, the list is read (step S53), and if any of the lists has been checked for startup display. Confirmation is performed (step S54), and if there is a check on display at startup, display setting information of the display setting name is obtained (step S56). The display setting information on the client side is transmitted to the application server 4 (step S57). The application server 4 performs a map image creation process based on the display setting information, transmits a map image as a result of the process to the client 1, and the client 1 displays a map image, a legend, and a message (step S59).
[0093]
On the other hand, if there is no display setting name list or no startup display setting, a display request based on the server-side default setting value is transmitted to the application server 4 (step S58). In the same manner as described above, the application server 4 performs a map image creation process based on the server-side preset values, returns the result to the client 1, and the client 1 displays a map image, a legend, and a message (step S59). .
[0094]
Finally, the map display process in the application server 4 will be described with reference to the flowcharts in FIGS.
[0095]
The application server 4 receives the user ID, the password 10 and the display setting instruction information 7 from the client 1 through the communication network 2 of the Internet or an intranet, first performs user authentication of the client 1, and determines whether the user is an authorized user. Perform (Step S66). Following confirmation of the user authentication, selection of a layer to be displayed based on the display setting instruction information (step S67), setting of the order of superposition of the selected layers, (step S68), display setting items for the layers to be displayed on the map Reading (step S69) is performed as appropriate. Regarding the graphic setting of the graphic display and the character display, there is no special designation, the default setting of the server is used, the selection of the layer / item is changed, or the graphic setting unique to the client (step S70). Then, the respective display setting values are fetched (steps S71, S76, S77). Subsequently, the map data in the display instruction range is read from the map database 14 (step S72), and the layer / data item management DB 13 and the graphic / symbol image DB 15 in the database server 5 are used to display the map by designating the display settings taken in earlier. Necessary information is read, graphic drawing and character display are performed on the map data (step S73), and these are superimposed (step S74). These display processes are sequentially performed for each layer, and are repeatedly performed until the last layer is reached (step S75). All of these map drawing processes are performed on vector map information. When this process is completed, the vector map information is converted into one map image for display on the client (step S78), and the range coordinates are calculated. (Step S79), and transmits the necessary message to the client 1 via the network 2 (step S81).
[0096]
【The invention's effect】
The present invention employs an image transfer method as a map information transfer method in a server / client map information display system using the WEB, so that a complex map including a large number of figures having a large data amount or a wide area map can be used. The map display can be performed without transferring large data from the server to the client. Further, since the vector data is not distributed on the web, there is no risk of leakage of valuable vector data. Further, since the map information is transferred in the form of an image, the client needs to be small, and is a system suitable for WEB.
[0097]
According to the present invention, not all the maps on the map are made-to-order, but the layer to be emphasized is changed according to the client's purpose, the layer overlay order is changed, the graphic display items and character display items to be displayed are selected, and the client's own graphic display is performed. Customizable map expressions such as text and text display.
[0098]
Setting information such as the client's own graphic display is stored in the client, and after the client's map system is activated, the map can be displayed with the display settings that have been set in advance, so that it is adjusted to suit the user's intended purpose. The map image can be displayed immediately.
[0099]
This system is specialized for various purposes such as statistical analysis of designated area, area marketing, customer management, various facility management, real estate information search, natural condition analysis, city / regional planning, fixed asset management, public facility management, etc. Map information can be used on the WEB.
[Brief description of the drawings]
FIG. 1 is a diagram showing an overall configuration of a related system centering on a server.
FIG. 2 is a diagram showing layer management information.
FIG. 3 is a diagram showing the contents of a schematic setting for each layer and each item.
FIG. 4 is a diagram showing an initial screen of a client.
FIG. 5 is a diagram showing a screen for performing display setting name registration.
FIG. 6 is a diagram illustrating a screen for instructing a layer superposition order.
FIG. 7 is a diagram illustrating an entire screen for changing display settings.
FIG. 8 is a diagram showing a setting example of graphic display.
FIG. 9 is a diagram illustrating another setting example of the graphic display setting.
FIG. 10 is a diagram illustrating a setting example of character display.
FIG. 11 is a diagram showing a setting screen relating to graphic setting of a point graphic layer.
FIG. 12 is a diagram illustrating an example of a symbol pattern used for setting a point graphic display.
FIG. 13 is a diagram illustrating an example of a color setting palette in display setting.
FIG. 14 is a diagram showing a setting screen regarding graphic setting of a line graphic layer.
FIG. 15 is a diagram illustrating an example of a line type pattern used for line graphic display setting.
FIG. 16 is a diagram showing a setting screen relating to graphic setting of a plane graphic layer.
FIG. 17 is a diagram showing an example of a painted pattern used for displaying a plane figure.
FIG. 18 is a diagram illustrating a screen for performing a character display setting.
FIG. 19 is a block diagram showing the contents of communication processing at the time of initial startup of a client.
FIG. 20 is a block diagram showing the contents of a communication process for displaying an initial map immediately after starting a client.
FIG. 21 is a block diagram showing the contents of communication processing for enlarging, reducing, and moving a map display of a client.
FIG. 22 is a block diagram showing a communication processing process when a display setting is changed.
FIG. 23 is a flowchart showing a map display processing process at an early stage of client activation.
FIG. 24 is a flowchart (part 1) illustrating a map display processing process in the application server.
FIG. 25 is a flowchart (part 2) illustrating a map display processing process in the application server.
[Explanation of symbols]
1. Client
2. Network
3. Web server
4: Application server
5 ... DB server
6 ... Display information to client
7: Display setting instruction information from the client
8 ... Display setting / instruction information to the server
10 ... User ID and password
12 ... User management DB
13. Layer data item management DB
14… Map DB
15 Schematic / symbol image DB
16 Layer information, schematic information
17 ... Map image, map range information
Fi… Function selection button
Hi: display or input area field
Wi ... Display section
X: Display screen
Si: processing step

Claims (21)

In a map information display system that displays a map image specified by a user,
Information receiving means for receiving display item information relating to the range-specified map,
Setting information creating means for generating display setting information including diagrammatic setting information based on the display item information;
Transmitting means for transmitting the display setting information,
Receiving means for receiving a map image created according to the display setting information,
Means for displaying the received map image. The setting information creating means selects a layer to be displayed based on the display item information, selects a graphic display item or a character display item of the selected layer, and sets the graphic display item or the character display item in advance. The map information display system according to claim 1, wherein the display setting information is generated using a set graphic diagram or character diagram. The setting information creating means selects a layer to be displayed based on the display item information, selects a graphic display item or a character display item of the selected layer, and selects a user for the graphic display item or the character display item. The map information display system according to claim 1, wherein the display setting information in which a unique graphic diagram or a character diagram is set is generated. The map information display system according to any one of claims 1 to 3, wherein the setting information creating unit sets an overlapping order of layers included in the display item information. 4. The map information according to claim 3, wherein when the layer is a point graphic, the graphic schema includes any one of symbol type information, pattern information, size information, color information, and transparency information. 5. Display system. 4. The map information display system according to claim 3, wherein when the layer is a line graphic, the graphic diagram includes any one of pattern information, size information, color information, and transparency information. 5. When the layer is a plane figure, the graphic scheme includes any one of pattern information, color information, and transparency information for the inside of the plane, and includes pattern information and size for the plane boundary line. The map information display system according to claim 3, further comprising setting of any one of information, color information, and transparency information. The map information according to any one of claims 5 to 7, wherein the graphic schema includes setting of a classification section or a rank section, and setting of the classification section name or the rank section name. Display system. 4. The map information display system according to claim 3, wherein the character diagram includes one of font information, size information, color information, and arrangement information. 10. The display setting information is given a name and stored, and when the map information display system is started, the stored display setting information is transmitted as initial display setting information. The map information display system according to one item. In a map information display system that displays a map image specified by a user,
Display information creating means for creating display item information related to the range-specified map,
Setting information creating means for generating display setting information including diagrammatic setting information based on the display item information;
Map image creating means for creating a map image from vector map information relating to the map according to the display setting information,
Map image display means for displaying the map image,
The display item information is transmitted to the setting information creating means via a communication network, the information setting information is transmitted to the map image creating means via the communication network, and the map image A map information display system transmitted to the map image display means via a network. The setting information creating means selects a layer to be displayed based on the display item information, selects a graphic display item or a character display item of the selected layer, and sets the graphic display item or the character display item in advance. The map information display system according to claim 11, wherein the display setting information is generated using a set graphic diagram or character diagram. The setting information creating means selects a layer to be displayed based on the display item information, selects a graphic display item or a character display item of the selected layer, and selects a user for the graphic display item or the character display item. The map information display system according to claim 11, wherein the display setting information in which a unique graphic diagram or a character diagram is set is generated. The map information display system according to any one of claims 11 to 13, wherein the setting information creating unit sets an overlapping order of layers included in the display item information. 14. The map information according to claim 13, wherein when the layer is a point graphic, the graphic diagram includes any one of symbol type information, pattern information, size information, color information, and transparency information. Display system. 14. The map information display system according to claim 13, wherein, when the layer is a line figure, the graphic scheme includes any one of pattern information, size information, color information, and transparency information. When the layer is a plane figure, the graphic scheme includes any one of pattern information, color information, and transparency information for the inside of the plane, and includes pattern information and size for the plane boundary line. 14. The map information display system according to claim 13, including setting of any one of information, color information, and transparency information. The map information according to any one of claims 15 to 17, wherein the graphic schema includes setting of a classification section or a rank section, and setting of the classification section name or the rank section name. Display system. 14. The map information display system according to claim 13, wherein the character diagram includes any one of font information, size information, color information, and arrangement information. 20. The map information display according to any one of claims 12 to 19, wherein the display setting information is given a name and saved, and the saved display setting information is set as initial display setting information. system. 20. The map information display system according to claim 12, wherein the map image creation unit creates a map image reflecting the display setting information according to a display scale.

Images