JP3656233B2 - Map display system, map display method, and map display program - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a map display system, a map display method, and a map display program suitable for a school district display system capable of displaying school district information on a map , and particularly to easily identify a boundary line of a school district. The present invention relates to a map display system, a map display method, and a map display program .
[0002]
[Prior art]
In general, a local government or the like has introduced a geographic information system for handling map information of a jurisdiction, and a function for displaying school district information is required as one of its functions. This school district is a division that sorts elementary schools and junior high schools that can be attended from the address in the municipality under its jurisdiction, and is usually sorted by character, with the closest school being the target. However, due to changes in the population / securing safe school routes, etc., it is not always possible to sort by character. Further, on the coastline, the boundary is interrupted at the coastline, and further, the boundary is not fixed in the mountains. Sometimes.
[0003]
[Problems to be solved by the invention]
The school district display in the prior art geographic information system, for example, in the map information of the district displayed on the display, set a closed region that divides each school by a boundary line, and a unique color for each closed region (school district) And the school district is displayed by filling the closed area of each school district with a predetermined color.
[0004]
However, the school district display system according to the prior art cannot set the school district as a closed area if the above-mentioned school district boundary line is cut off along the coastline or the boundary line is not fixed. In the computer processing, if the closed area is not set, the area cannot be filled, and the school district display by the color coding may not be possible.
[0005]
Furthermore, in the conventional school district display system, in order to fill the school district, when the scale on the display is changed and enlarged, the area of the painting becomes larger, and the appearance may be damaged. In the case of color printing, there is a problem that the amount of ink consumed increases.
[0006]
An object of the present invention is to eliminate the above-mentioned problems caused by the prior art, and to solve such a conventional problem, and to display an area division even if a regional boundary line such as a school district is cut halfway. It is also possible to provide a map display system, a map display method, and a map display program that can clearly display sections even if the scale is changed.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a map display system that displays a color-coded region segmentation with respect to a boundary line that forms an area by a broken line. the boundary and memory device including a ward table storing gu border table and color information before Symbol Ward each ID for storing the wards ID adjacent, the location information and the fold line of the fold line from the ward boundary table of the storage device The left and right adjacent ward IDs are extracted , the color information for each extracted ward ID is extracted from the ward table, the positions separated by a certain distance to the left and right of the broken line, and the left and right areas from the broken line to the determined position It is a first feature that a block boundary display unit is provided that performs fill display according to color information extracted from the block table .
[0008]
Furthermore, the present invention provides a map display method for displaying a region segment by color with a boundary line forming an area formed by a broken line as a boundary, and the position information of the broken line that divides the region and the ward IDs adjacent to the left and right with respect to the broken line as a boundary. a storage device including a ward table storing gu border table and color information before Symbol ku each ID and stores, prepared and ward boundary display unit for controlling the storage device, the Zone boundary display unit, said storage A first step of extracting the position information of the broken line and the section ID adjacent to the left and right from the broken line from the section boundary table of the apparatus, and a second step of extracting the color information for each section ID extracted by the first step from the section table. A step, a third step for obtaining a position separated by a certain distance to the left and right of the broken line taken out by the first step, and a left and right region from the broken line to the position obtained by the third step To perform a fourth step of performing display fill accordance with the color information retrieved from the table to the second feature.
[0009]
In addition, the present invention is a map display program for color-coding and displaying a region division with respect to a boundary line forming an area by a broken line, and the position information of the broken line dividing the region and the right and left adjacent divisions with the broken line as a boundary. to the storage device including a ward table for storing color information ward boundary table and before Symbol Ward each ID for storing the ID, to the left and right by the ward boundary table of the storage device to the boundary of the position information and the fold line of the fold line A first procedure for extracting adjacent ward IDs, a second procedure for extracting color information for each ward ID extracted in the first step from the ward table, and a position separated by a certain distance to the left and right of the fold line extracted in the first step And a fourth procedure for displaying the left and right areas from the broken line to the position obtained in the third step according to the color information extracted from the section table. To run to a third feature.
DETAILED DESCRIPTION OF THE INVENTION
A school district display system, school district display method and program suitable for a map display system, map display method, and map display program according to an embodiment of the present invention will be described below in detail with reference to the drawings. 1 is a block diagram of a school district display system according to an embodiment of the present invention, FIG. 2 is a data configuration diagram of a school district boundary table according to the present embodiment, and FIG. 3 is a data configuration diagram of a school district table according to the present embodiment. FIG. 4 is a flowchart for explaining the operation of the ward boundary display unit according to this example, FIG. 5 is an operation flowchart of the school ward boundary editing unit according to this embodiment, and FIG. 6 is a display state including a school ward to which this embodiment is applied. FIG. 7 is a diagram for explaining the details of the school district boundary shown in FIG.
[0010]
As shown in FIG. 1, the school district display system according to the present embodiment includes a display device 1 such as a CRT (Cathode Ray Tube), a mouse 2 as a pointing device (input device), a CPU (Central Processing Unit), and a main device. An information processing apparatus 3 that includes a memory and performs processing by the storage program method, an external storage device 4 that includes an HDD (Hard Disk Driver), etc., and a recording medium 5 that stores school district data and a school district display program And a driving device 6 for reading data and programs from the recording medium 5.
[0011]
In this school district display system, the information processing device 3 reads the program and data of the recording medium 5 into the main memory or the external storage device 4 via the drive device 6, and functionally in the control section 7 according to a predetermined program. Schools that include the boundary display unit 7a and the school district boundary editing unit 7b, the school district boundary table 4a that includes the boundary data of school districts in the external storage device 4, and the school district data in the corresponding district The ward table 4b is generated.
[0012]
The school district boundary table 4a stores the information on the broken lines in an array form, in which the school district boundaries are approximated by broken lines, and each row of the array stores information on the broken lines of the boundaries. 2, each row includes a boundary ID 21 for identifying a broken line, a broken line vertex 22 for storing coordinate values of a broken line vertex column, a school district ID 23 on the right side of the broken line, and a school district on the left side. The school district ID 24 is stored. That is, the school district boundary table 4a stores boundary position information (coordinates) information and color information for each school district.
[0013]
The school district on the right side of the broken line is the school district that is in contact with the right side of the broken line when the viewpoint is moved along the broken line (boundary line) made up of vertex lines on the map. The same applies to the school district on the left. For example, referring to FIG. 6, the school district on the right side of the school district boundary connecting the points a and b is the I elementary school district 61, and the school district on the left side is the U elementary school district 60. In addition, the left and right sides of the boundary line described in this specification are the left and right when the boundary line is assumed to be a vertical direction, and on an actual map, for example, when the boundary line is horizontal, it corresponds to the vertical direction. explain.
[0014]
Further, as shown in FIG. 3, the school district table 4b stores school district information in an array format. This school district information includes school district IDs 31 for identifying school districts in each row, and belonging to these school districts. A school name 32 and a school district boundary color 33 assigned a unique color for each school.
[0015]
The school district display system according to the present embodiment has a predetermined flow in which the control unit 7 shown in FIG. 1 refers to or updates each piece of information stored in the school district boundary table 4a and the school district table 4b. The school district is displayed in accordance with the above, and this processing procedure will be described below with reference to FIGS.
[0016]
First, in the school district display system, the control section 7 shown in FIG. 1 reads the school district boundary table 4a and the school district table 4b by the function of the school district boundary display section 7a, and displays the school district map on the display device 1. After this, the vertex 22 of the broken line, the school zone ID 23 on the right side, and the school district ID 24 on the left side are taken out from the school district boundary table 4a (step 401), and then the school district ID 23 on the right side and the school district ID 24 on the left side are extracted. The corresponding color 33 is searched for a line that matches the school district ID 31 of the school district table 4b, and each color 33 (for example, green / pink) is acquired (step 402).
[0017]
Next, the system converts the coordinate value stored at the vertex 22 of the broken line into a coordinate value that can be handled by the display device 1 in consideration of the map scale and the display range (step 403), so that one boundary of the school district is obtained. For example, the broken line information of the line connecting the points ab shown in FIG. 6 is obtained (step 404), and the coordinates separated by a certain width on the right side of the broken line are obtained by calculation and the certain width The area is filled (step 405). This step 405 will be described in detail. In this process, the line segments constituting the broken line are decomposed, and coordinates separated by a certain width (a predetermined number of pixels, for example, 10 to 20 pixels) are attached to each line segment. Then, a second broken line connecting these coordinates is calculated, and the rectangular area between the broken line obtained in step 403 and the second folded line is filled with the right color obtained in step 402.
[0018]
Next, the present system calculates the coordinates of the constant width region on the left side of the broken line obtained in step 403 by a certain width (predetermined number of pixels) to the left from each vertex of the broken line by the same procedure as described above (step 406). ) To calculate the third fold line, fill the left area between the fold line obtained in step 403 and the third fold line with the left color (step 407), and draw one line in the school district boundary table, The above processing procedure is repeated for the number of boundary lines stored in the school district boundary table (step 408).
[0019]
In this way, the school district display system acquires boundary line information, that is, line coordinates and color information of the left and right school districts, from the school district boundary table 4a, and based on the line information and color information, the boundary line and the boundary are obtained. The area of a certain width on the left and right sides of the line is painted with the colors of the left and right school districts, so that the left and right of the boundary line are given a predetermined color and the school districts are divided and displayed.
[0020]
For example, as shown in FIG. 6, in the case where I elementary school district 60 / U elementary school district 61 / S elementary school district 62 / H elementary school district 63 / E elementary school district 64 are adjacent, the boundary between I elementary school district 60 and U elementary school district 61 School districts are displayed by filling the left side with a pink 6b and the right side with a green 6b with a boundary line (folded line) connecting points ab, which is a line, as well as the boundaries of each school district. A color with a constant width on the left and right of a boundary line (folded line) connecting lines, for example, a point cd, a point cdfg, a point edfh, and a point ghh It is displayed for each school district, that is, the boundary lines of a plurality of school districts are displayed in two colors on the left and right, and the school districts are displayed in a divided manner.
[0021]
In addition, as shown in FIG. 7, when the boundary of the school district border line is a broken line segment connecting points k1-k2-k3-k4-k5-k6-k7, Taking a line segment, for example, a line segment between k1 and k2, as an example, a line segment between k1 and k2 and a line segment having a certain width parallel to the right side (upper side in FIG. 7) are assumed. The rectangular closed region connecting the minute end points is calculated, the inside of the closed region is filled with the specified color (blue 6f in the present invention example), and the left side (upper side in FIG. 7) is similarly filled. .
[0022]
The school district display system according to the present embodiment also sets the second and third line segments (folded lines) so that the control unit 7 keeps the color width constant even when the display screen is enlarged or reduced. Since the color width does not change according to the enlargement and display of the screen, it is possible to make the division of the school district easier to see.
[0023]
Next, a processing procedure for changing the above-mentioned school district, that is, changing the boundary line will be described with reference to FIG.
As shown in FIG. 5, the processing procedure is as follows. The operator looks at the school district map displayed on the display device 1 and clicks the neighborhood of the vertex of the broken line to be changed from the mouse device 2 to edit the school district boundary. The unit 7b is called, and the newly input mouse coordinates are converted into map coordinates in consideration of the scale and display range (step 501). Next, the converted coordinate values are viewed, and the school boundary table 4a The closest one of the coordinates 22 of the broken line is searched, the found record is read as an editing target (step 502), the vertex to be changed and the coordinate value of the change destination are obtained from the mouse 2 (step 503). By converting the obtained coordinate values into map coordinates, correcting the coordinate 22 of the broken line in the school district boundary table 4a, and writing it in the school district boundary table 4a (step 504) Divide.
[0024]
At this time, this processing changes the contents of the school district boundary table 4b and calls the school district boundary display section 7a to reflect the change of the display contents on the display device 1 (step 505), and the school district boundary shown in FIG. The processing operations of the display unit 7a and the school district boundary editing unit 7b, that is, the processing steps of the flow shown in FIGS. 4 and 5 are converted into programs, and the converted programs are stored in a recording medium such as a CD-ROM. The update is executed by mounting the recording medium on an arbitrary computer where the map information is provided, and installing the program or downloading from the other via the network.
[0025]
The school district display program for executing the present embodiment includes a school district boundary table that stores position information of border lines that divide school districts in the region, and school district names that are adjacent to the left and right borders of the border lines, A school district table for storing color information for each school district, a procedure for inputting the position information of the boundary line, the name of the school district, and the color information for each school district, and a region based on the position information of the boundary line A procedure for displaying a boundary line in the computer, and a procedure for displaying a color for each school district with a predetermined width on the left and right of the boundary line based on the color information for each school district. It can be recorded on a recording medium.
[0026]
As described above, according to the present embodiment , the left and right colors of the boundary line of the school district in the area can be displayed according to the school district, and the color width can be set to the predetermined value width regardless of the enlargement / reduction ratio of the display screen. This makes it easy to see the section.
[0027]
In the above embodiment, the example in which the tables shown in FIGS. 2 and 3 are separately provided and the above-described processing is executed has been described. However, the present invention is not limited to this, and the other types are the same. In addition to the mouse, a trackball or a keyboard cursor key may be used as a pointing device.
[0028]
【The invention's effect】
According to the present invention described above, the width of the border boundary lines is constant irrespective of the scale, there is an effect that easily recognized for the operator. It is possible to edit the broken line of or border boundary lines directly, there is an effect that can be easily modified if there is a need to change the boundary line. Since the deal as a set of or border boundary line is a broken line, it can cope even in the case where part of the boundary line is not closed at undetermined.
[Brief description of the drawings]
FIG. 1 is a block diagram of a school district display system to which a map display system according to the present invention is applied .
FIG. 2 is a data configuration diagram of a school district boundary table according to the present embodiment.
FIG. 3 is a data configuration diagram of a school district table according to the present embodiment. FIG. 4 is a flowchart for explaining an operation of a school district boundary display unit according to the present embodiment.
FIG. 5 is an operation flowchart of the school district boundary editing unit according to the present embodiment.
FIG. 6 is a diagram for explaining a display state including a school district to which the present embodiment is applied.
7 is a diagram for explaining details of a school district boundary line shown in FIG. 6;
[Explanation of symbols]
1: Display, 2: Mouse, 3: Information processing device 4: External storage device, 4a: School district boundary table, 4b: School district table, 5: Drive device, 6: Recording medium, 7: Control unit, 7a: School District boundary display section, 7b: School district boundary editing section, 21 ... Boundary ID, 22 ... Vertical line vertex, 23 ... Right school district ID24 ... Left school district ID, 31 ... School district ID, 32 ... School name, 33 …color

Claims (3)

A map display system that color-codes the division of a region with a boundary line forming an area by a broken line as a boundary,
A storage device including a ward table for storing position information and color information of the ward boundary table and before Symbol Ward each ID for storing the wards ID adjacent to the left and right in the boundary該折line fold line that divides the area,
Taking out the color information for each ward ID extracted the takes out wards ID adjacent to the left and right from ward border table of the storage device to the boundary of the position information and the fold line of the fold line from the ward table, fixed to the left and right of the fold line distance A map display system comprising a block boundary display unit that determines a distant position and displays a left and right region from the broken line to the determined position in accordance with color information extracted from the block table . A map display method for displaying a color-coded region division with a boundary line forming an area by a broken line,
A storage device including a ward table for storing position information and color information of the ward boundary table and before Symbol Ward each ID for storing the wards ID adjacent to the left and right in the boundary該折line fold line that divides the area, the storage Prepare a boundary display area to control the device,
The District boundary display unit,
A first step of extracting position information of a broken line and a section ID adjacent to the left and right with respect to the broken line from the section boundary table of the storage device;
A second step of extracting color information for each ward ID extracted in the first step from the ward table;
A third step for obtaining positions separated by a certain distance to the left and right of the broken line extracted in the first step;
A map display method , comprising: performing a fourth step of filling and displaying left and right regions from the broken line to the position obtained in the third step according to color information extracted from the section table . A map display program that displays a color-coded region segmentation with a boundary line forming an area by a broken line,
To the storage device including a ward table for storing location information and district border table and color information before Symbol Ward each ID for storing the wards ID adjacent to the left and right in the boundary該折line fold line that divides the area,
A first procedure for extracting position information of a broken line and a section ID adjacent to the left and right with the broken line as a boundary from the section boundary table of the storage device;
A second procedure for extracting color information for each ward ID extracted in the first step from the ward table;
A third procedure for obtaining positions separated by a certain distance to the left and right of the broken line taken out in the first step;
A map display program for executing a fourth procedure in which the left and right areas from the broken line to the position determined in the third step are displayed in accordance with the color information extracted from the section table .

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