JP3535596B2 - Figure data adjustment method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for adjusting graphic data contained in a plurality of map databases and the like.

[0002]

2. Description of the Related Art Recently, a new map database is created by extracting data in a predetermined range from a plurality of map databases. For example, when extracting and integrating corresponding identical data such as roads from multiple map databases, one data is affine-transformed to match the position of the other data and adjusted at the junction. I am editing. Since the deviations of the constituent data of multiple map databases are different for each part, if both maps are overlaid after the affine transformation, the roads derived from each map database may be misaligned or overlapped. become. However, in the integrated map database, data obtained from different map databases for each part is used, and data such as roads do not overlap. However, for example, among a plurality of map databases, road (block line) data and house shape data may be extracted from one map database, and only road (block line) data may be extracted and integrated from the other map database. is there. In this case, first, the affine transformation parameters are calculated by paying attention to the respective road (block line) data of the one map database and the other map database. Next, one of the house shape data of one map database and the road (block line) data of the other map database is affine-transformed, and both data are integrated and displayed. At this time, since the amount of deviation of the original map database differs depending on the parts, there may be a part where the house overlaps a part such as a road, a park, or a river, or a protruding part.

Conventionally, a portion where a house or the like overlaps a portion such as a road, a park or a river, or a protruding portion is visually determined and manually corrected by using a digitizer or the like.

[0004]

However, in the method of visually deciding a portion where a house or the like overlaps a portion of a road, a park, a river or the like, or a portion of the house, etc., which is corrected manually by using a digitizer or the like, The operator's judgment and work are complicated, and there is a risk that errors may occur and that the data correction method may differ depending on the case.

The present invention has been made in view of the above problems, and its object is to automatically extract a portion to be corrected in graphic data and efficiently correct the graphic data according to a predetermined standard. An object of the present invention is to provide a graphic data adjustment method that is small in human error and highly objective.

[0006]

In order to achieve the above-mentioned object, the first invention is to extract house shape data included in a predetermined target area from the first map database and to extract it from the second map database. First house-shaped data and first block-line data obtained by extracting block-line data included in the predetermined target area and performing coordinate conversion of either the house-shaped data or the block-line data; In a system for creating a third map database including:
Whether the house shape data of each intersects with each of the first block line data and whether or not the house block data extends outside the first block divided by the first block line data. And (b) in the step (a), when it is determined that the first house shape data is protruding, the first block in the first house shape data The data of the line segment of the portion located outside is the first out-of-range data, and the data of the line segment of the portion located inside the first block is the second house shape data.
And a step of distinguishing the figure data.

A second aspect of the present invention extracts house shape data included in a predetermined target area from the first map database, and extracts block line data included in the predetermined target area from the second map database. Then, in the system for creating the third map database including the first house shape data and the first city line data, which is obtained by performing coordinate conversion of either the house shape data or the city block line data, (A) For each of the first house-shaped data, it is calculated whether or not it intersects with each of the first block-line data, and the first block divided by the first block-line data. From outside to outside, and (b)
When it is determined in the step (a) that the first house shape data is protruding, a line segment of a portion of the first house shape data that is located outside the first block. (C) the first out-of-range data, the data being the first out-of-range data, and the line segment data of the portion located inside the first block being the second house-shape data. And (d) in the steps (a) and (b), single or plural block line data determined to intersect with the first house shape data among the first block line data. As the second block line data, and (e) providing a first dividing line that is separated from each block line constituting the second block line data by a predetermined distance toward the center of the block. , (F) for each of the second house shape data, Of the line segment data located on the outer side of the dividing line as the second out-of-range data, and the line segment data of the part located on the block side of the block line as the fourth house-shaped data. And (g) deleting the second out-of-range data, and (h) creating fifth house-shape data surrounded by the fourth house-shape data and the first dividing line. Step (i) For all the first house shape data, the judgment is carried out by the step (a), and for the house shape data which is judged to be protruding in the step (a), the steps (b) to ( and a step of repeating step h). Further, a third aspect of the present invention extracts house shape data included in a predetermined target area from the first map database, and extracts block line data included in the predetermined target area from a second map database, In a system for creating a third map database including first house shape data and first block line data obtained by coordinate conversion of either the house block data or the block block data, (a) For all the block lines forming the first block line data, a step of providing a second partition line at a position separated from the block line by a predetermined distance toward the center of the block, and (b) each of the above With respect to the first house shape data, a step of determining whether or not the first house shape data is outside the range delimited by the second delimiter line; and (c) the first house shape data in step (b). But protruding When it is determined that the second segment line is the data of the line segment of the portion of the first house shape data located outside the second segment line, the third segment out-of-range data. The line segment data located closer to the center of the block is used as the sixth house shape data to be distinguished, (d) the third out-of-range data is deleted, and (e) the second Of the dividing lines, the one or more second dividing lines that are determined to intersect the first house-shaped data in the steps (b) and (c) are distinguished as a third dividing line. , (F) a step of creating seventh house shape data surrounded by the sixth house shape data and the third dividing line, and (g) all the first house shape data
The step (b) is performed for the house shape data of step (b), and the step (c) to step (f) are repeated for the house shape data that is determined to be protruding in step (b). Is a graphic data adjusting method.

A fourth aspect of the invention is to extract house shape data included in a predetermined target area from the first map database and to extract block line data included in the predetermined target area from the second map database. Then, in the system for creating the third map database including the first house shape data and the first city line data, which is obtained by performing coordinate conversion of either the house shape data or the city block line data, (A) For each of the first house-shaped data, it is calculated whether or not it intersects with each of the first block-line data, and the first block divided by the first block-line data. From outside to outside, and (b)
Of the first house shape data, in step (a), the house shape data determined to be protruding is distinguished as eighth house shape data; and (c) of the first block, Distinguishing a block including a part of the eighth house shape data as a second block; (d) determining a center point of the second block; and (e) calculating the first house shape data. Among them, a step of extracting house shape data that is wholly or partially included in the second block and distinguishing it as ninth house shape data; and (f) for each of the second block, Reducing the ninth house shape data with the center point obtained in the step (d) as an origin at a predetermined ratio to create tenth house shape data; and (g) the ninth house shape. And a step of deleting data, which is a method for adjusting graphic data.

A fifth aspect of the invention is to extract house shape data included in a predetermined target area from the first map database and to extract block line data included in the predetermined target area from the second map database. Then, in the system for creating the third map database including the first house shape data and the first city line data, which is obtained by performing coordinate conversion of either the house shape data or the city block line data, (A) determining a first block surrounded by the first block line data from the first block line data; and (b) each of the first block for each of the first block. Determining the center point of the block, and (c) extracting and extracting which house shape data of the first house shape data is included in part or all of the first house data for each of the first blocks. And the eleventh house-shaped day A distinguishing step as, (d)
For each of the first blocks, the eleventh house shape data extracted in the step (c) is reduced at a predetermined ratio with the center point obtained in the step (b) as an origin. , A step of creating twelfth house shape data,
(E) deleting all of the first house-form data and storing the twelfth house-form data, the figure data adjusting method.

[0010]

First, the first house shape data included in the predetermined target area is extracted from the first map database, and the first block line data included in the predetermined target area is extracted from the second map database. Then, in the system for converting the coordinates of either the first house shape data or the first block line data and superimposing both data, a third map database is created. Automatically calculates whether or not each of the house shape data intersects with the first block line data, and protrudes from the first block delimited by the first block line data to the outside. Is determined. Next, the house shape data and the like of the protruding portion are automatically corrected according to a predetermined standard so as not to intersect with the block line data.

[0011]

Embodiments of the present invention will be described in detail below with reference to the drawings. First, the first embodiment will be described.
FIG. 1 is a diagram for explaining the principle of the present invention, FIG. 2 is an apparatus configuration diagram showing an example of a system configuration, and FIG. 3 is an explanatory diagram for a map database.

1 and 2, 1 is a first system for implementing the present invention, 3 is a host computer, and 5 is an internal storage device. Further, 7a is a first map database, 7b is a second map database, 7c is a third map database, 9 is an application program, and these are stored in an external storage device. The work area 11 is stored in the internal storage device 5 of the host computer 3.
Is provided. In addition, the host computer 3
A terminal device 13, a display 15, a keyboard 17, and a printer 19 are connected.

The operator looks at the display 15 and
The keyboard 17 of the terminal 13 calls the application program 9 to the host computer 3 and gives an instruction for performing necessary processing. A fluid work file or the like having contents being processed is put in the work area 11 in the internal storage device 5. The progress and results of the processing are output from the printer 19.

In the flowchart shown in the AA section of FIG. 1, step 101 is the preprocessing of the present invention. First, a target range is designated from the areas included in the first map database 7a and the second map database 7b.
The first map database 7a is, for example, as shown in FIG.
As shown in (a), in the second system 21, the first digitizer 2 connected to the first computer 23.
5 is created by inputting the data of the first map 27. Also, the second map database 7b is
In the third system 31, the second computer 33
It is created by inputting the data of the second map 37 using the second digitizer 35 connected to.

Next, as shown in FIG. 3B, house shape polygon data (house shape data) and block line (road line) data included in a predetermined target area are extracted from the first map database 7a. Then, the road line data included in the predetermined target area is extracted from the second map database 7b. Next, attention is paid to the corresponding road line data in each map database and a predetermined process is performed to calculate the affine transformation parameters. Using the affine transformation parameters, either the house shape data of the first map database 7a or the block line data of the second map database 7b is affine transformed to create a work file 8 containing both data. , Is temporarily stored in the work area 11. In this example, the house shape data of the first map database 7a is affine transformed. The work file 8 contains house shape data and block line data separately. If the data amount of the work file 8 is very large, the work file 8 may be stored in an external storage device, and the data may be called to the work area 11 and executed in each predetermined area. Then, the following process for creating the third map database 7c is performed.

In step 102 according to the present invention, first,
(A) Process the house-shaped polygon data in the work file 8 in the work area 11 so that it will not be displayed as it is at a position protruding or overlapping with a road, park, river, etc. outside the block. Determine the processing method to do so. Next, (b) each house shape polygon data is compared with the position of the block line (road line) data and a predetermined process is performed, and (c) new house shape polygon data is created.

At step 103, the positional relationship between the house shape data of the first map database 7a and the road line (block line) data of the second map database 7b is unified using the processing result of step 102. Create a new, third map database adjusted to.

FIG. 4 is a diagram for explaining a method of distinguishing and showing the protruding portion 51, and FIG. 5 is a protruding portion 5 of the house shape data.
6 is a flowchart for explaining the method for distinguishing 1 from FIG.
FIG. 6 is a diagram illustrating correction of polygon data.

FIG. 4A is a diagram in which the data in the display area 41 of the work file 8 is displayed on the display 15 as it is with a solid line.
3a, 43b ... Depending on the block 45a, 45b ...
It is divided into a part and a road 47 part. Unprocessed house-shaped polygons 49a and 49b included in the work file 8
Originally, it should have been located inside the block 45, but due to the error accumulated in the steps from surveying, plotting, digitizing, and affine transformation, the house-shaped polygon is located on the road side. The protruding portions 51a, 51b, ... Of 49 are protruding.

Of the data contained in the work file 8, the unprocessed house-shaped polygon data is the first house-shaped data, and the unprocessed road line (block line) data is the first block-line data. To do. First, one house-shaped polygon 49a is extracted from the first house-shaped data (step 501), and the presence or absence of an intersection between the data of the house-shaped polygon 49a and the data of the block lines 43a, 43b. In step 502), it is determined whether there is an intersection between the house-shaped polygon 49a and the block line 43 (step 503). If it is not determined in step 503 that there is an intersection, no processing is performed on the house-shaped polygon, the process returns to step 501, and steps 502 and 5 are executed for another house-shaped polygon 49.
Repeat 03.

In the case of the house-shaped polygon 49a of FIG. 4, in step 503, the intersection 53a on the block line 43a,
It is determined that there is 53b. At this time, as shown in FIG. 6A, in the data of the closed house-shaped polygon 49a surrounded by the points A, B, C, and D, the line segment AD and the line segment BC respectively intersect at an intersection 53a. , 53b into two line segments, and the closed house-shaped polygon 49a is divided into, for example, the second house-shaped data 55a that is an open polygon and the protruding portion 51a that is an opened polygon, and flags the flags. Etc.

At this time, as shown in FIG. 6A, the second house shape data 55a consisting of the intersection points 53a, A, B, and 53b is shown by a solid line, and the intersection points 53b, C, D, The protruding portion 51a composed of the intersection 53a is shown separately by a broken line or the like (step 504). When displayed on the display 15, the portion indicated by the broken line or the like can be distinguished by a color or the like. By repeating the processing from step 501 to step 504 for all the house-shaped polygons in the display area 41, the result shown in FIG. 4B is obtained. Of the first house-form data in the work file 8, the data to be corrected is corrected to generate the second house-form data 55a, 55b, 55.
The data of the house shape polygons 49e and 49f, which are c, 55d, and 55g and do not need to be corrected, are stored in the third map database as the first house shape data.

Further, the data of the protruding portion 51 is stored separately from other data in the third map database so as to be used for other purposes, but is not displayed on the display 15 and is displayed at the time of outputting from the printer 19. It is also possible not to draw.

FIG. 7 is a flow chart for explaining the method of removing the protruding portion 51, and FIG. 8 is a diagram for explaining the method of removing the protruding portion 51. As shown in step 704 of FIG. 7, from the first house shape data,
It is also possible to delete the data of the protruding portion 51 and store only the second house shape data 55 and the first block line data in the third map database. In this case, FIG. 8 (a)
The house-shaped polygon 49 shown in is modified as shown in the second house-shaped data 55 in FIG. 8B.

At this time, as shown in FIG. 6B, in the open polygon data of the second house shape data 55a consisting of the intersection points 53a, A, B, and 53b, at the end points of the opened portions. If certain intersections 53a and 53b are connected, the polygon data will be closed as it is. However, FIG.
As shown in (c), the intersection 53c, which is the end point of the open portion of the open polygon data of the second house shape data 55b,
If the intersection point 53d is connected as it is to form closed polygon data, the shape of the house shape data is deformed. Therefore, the second house shape data 55a, 55b, 55c, 55
The d and 55 g are handled as open polygon data.

However, as shown in FIGS. 7 and 8, when the data in the protruding portion 51 is deleted, the second house shape data 55a is displayed without displaying the first block line data in the third map database. , 55b, 55c, 55d, 55g, the shape becomes unknown because the house-shaped polygon is not closed.

Therefore, in order to make the modified second house-shaped polygon into a closed polygon, as shown in FIG. 6D, for example, the open part of the polygon of the second house-shaped data 55b is converted to the block line 43a. It is necessary to create the third house shape data 57 supplemented at the portion from the intersection 53c on the lines 43b to the intersection 53d and store it in the third map database 7c.

In the above examples, one house-shaped polygon intersects only with the boundary line of one city block, but in this embodiment, the position itself of the polygon data is not changed, so that one house Even when the shaped polygon is located over two or more city blocks, it can be processed in the same manner as shown by a broken line or by deleting a portion overlapping the road.

As described above, according to this embodiment, the data of the house-shaped polygon 49 is automatically adjusted by a simple method without human error, and the protruding portion 51 on the road or the like is automatically distinguished or deleted. By displaying it, you can create a good database.

Although the house shape polygon data and the road line (block line) data in the two map databases are processed in this embodiment, the processing in this embodiment is closed to the first graphic database. When the polygon data and the boundary data for dividing the target area are included, and the corresponding second graphic database includes the boundary data for dividing the target area, the closed polygon of the first graphic database is the second polygon.
The same can be applied to the case of adjusting the closed polygon data so as not to intersect the boundary line of the figure database. [Second Embodiment] Next, a second embodiment for correcting the house-shaped polygon data using the first dividing line will be described. FIG. 9 is a flow chart for explaining the method of using the first dividing line, and FIGS. 10 and 11 are diagrams for explaining the method of using the first dividing line.

In FIG. 9, steps 901 to 903 correspond to steps 501 to 5 in FIG.
The same process is performed up to 03. In step 904, with respect to the house-shaped polygon 49a as shown in FIG. 10A, the actual size of the house-shaped polygon 49a is 0. 5
A first division line 81 parallel to the road line (block line) 43a is provided at a position separated by m (0.1 cm in the case of a scale of 1/500).

Next, as shown in FIG. 10B, the line segments and the deleted portions 82a, 82b, and 82c that are part of the line segments that form the house-shaped polygon 49 are deleted, and as shown in FIG. A new house-shaped polygon 83 surrounded by a line segment and a part (fourth house-shaped data) of the house-shaped polygon 49 and the first dividing line 81 is displayed on the screen. In the process of step 904, as shown in FIG. 11A, the first dividing line 81 is provided only for the road lines (block lines) 43a, 43b, 49c, 43e where the intersections calculated in step 902 exist. House-shaped polygons 49a, 4
5th by correcting the data of 9b, 49c, 49d, 49g
House shape data 83a, 83b, 83c, 83d, 83g
Then, the house-shaped polygons 49e and the house-shaped polygons 49f located just inside the city block line 43f are stored in the third map database 7c without being corrected.

According to the second embodiment, when the house-shaped polygon 49 intersects the block line 43, the house-shaped polygon 49
House-shaped polygon 49 so that the block line 43 and the block line 43 do not overlap.
Data can be modified.

[Third Embodiment] In the third embodiment, the second dividing line 85 is set for all the blocks, and the relationship between the second dividing line 85 and the house-shaped polygon 49 is the same as in the first embodiment. The processing is regarded as the same as the relationship between the block line 43 and the house-shaped polygon 49.

FIG. 12 is a flow chart for explaining the method of using the second dividing line 85, and FIG. 13 is a diagram for explaining the method of using the second dividing line 85. First, for all block lines, block 45 is a predetermined distance from block line 43.
When the second delimiter line 85 is set at the position inside of (step 1201), it becomes as shown by the alternate long and short dash line in FIG. 13 (b). Next, one of the house-shaped polygons 49
For example, the house-shaped polygon 49a is extracted, it is calculated whether or not there is an intersection between the house-shaped polygon 49a and the block line 43 (step 1202), and it is determined whether or not there is the intersection (step 1203). If it is determined in step 1203 that the intersection exists, the line segment or part of the line segment that is outside the second dividing line 85 is deleted from the line segments that form the house-shaped polygon 49a and left. The sixth house shape data, which is an opened polygon, is defined as the opened portion. Then, the closed polygon surrounded by the sixth house shape data and the second dividing line 85 is displayed as the seventh house shape data (step 12).
04), and stores it in the third map database 7c.

As shown in FIG. 13B, in the third embodiment, the house-form polygons 49a, 49b, 49, 49e, 49e, 49b, 49, 49e whose data are not modified in the second embodiment are also included.
Since the same processing as in c, 49d, and 49g is performed to correct it to 83e, when the data of the third map database 7c is output, the distance between the road and the house shape data must be the predetermined distance. It is possible to create an easy-to-see map with unified visual expression.

[Fourth Embodiment] The fourth embodiment is a first method in which individual house-shaped polygons 49 are shown in a reduced size.

FIG. 14 is a first diagram showing the house-shaped data reduced.
15 is a flowchart for explaining the first method, and FIG. 15 is a diagram for explaining the first method in which the house-shaped data is reduced and shown.

First, one piece of data of the house-shaped polygon 49 is extracted (step 1401). Here, for example, the house-shaped polygon 49a is extracted. Next, the presence / absence of an intersection is calculated between the data of the house-shaped polygon 49 and the data of the block line (step 1402), and the presence / absence of the intersection is determined (step 1403).

If it is determined in step 1403 that there is an intersection, the block line 43 intersecting the house-shaped polygon 49a.
Check which block a belongs to (step 14)
04). In this case, it can be seen that the block line 43a constitutes a part of the boundary line of the block 45a. Next, Block 4
All house-shaped polygons 49, which are partially or wholly included in 5a, are extracted (step 1405).

Next, regarding the block 45a, the center 87 of the block
a is calculated (step 1406). City center 87a
As a method of calculating, there is a method of calculating the center of gravity. Then, the coordinates of the respective intersections forming the house-shaped polygon 49 when the center 87a of the block is set as the origin are calculated so as to be reduced by, for example, 5%, and the tenth intersection consisting of the newly obtained intersections is calculated. Data of the house-shaped polygon 91 is obtained (step 1407) and displayed. At this time, regarding all of the blocks 45 in the display area 41 shown in FIG. 15, with respect to the block 45e, it is assumed that none of the house-shaped polygons 49 located inside intersect with the block line.
As shown in FIG. 15B, the data is not corrected for the house-shaped polygon 49h in the block 45e.

As shown in the deleted portion 82c of FIG. 10B, when the line segment of the house-shaped polygon 49 is modified rather than the entire house-shaped polygon 49, the overall shape of each house-shaped polygon is
It may be different from the original shape as shown in FIG. However, in the fourth embodiment, since the individual house-shaped polygons 49 are shown in a reduced size, the shape of each house-shaped polygon 49 is retained.

[Fifth Embodiment] The fifth embodiment is a second method in which individual house-shaped polygons 49 are shown in a reduced size.

FIG. 16 is a second diagram showing the house-shaped data in a reduced form.
17 is a flowchart for explaining the second method, and FIG. 17 is a diagram for explaining the second method in which the house-shaped data is reduced and shown.

First, the center 87 of each block 45 is calculated (step 1601). Next, the house-shaped polygons 49 are extracted one by one, and it is checked which block 45 each house-shaped polygon 49 is included in (step 1602). At this time, the block 45 in which the whole or part of the house-shaped polygon 49 is included is examined.

Next, the coordinates of each intersection forming each house-shaped polygon 49 are set to, for example, 5 with the center 87a of the block being the origin.
Coordinates are calculated so as to be reduced by%, and this is displayed as the twelfth house-shaped polygon 95 composed of the newly obtained intersection (step 1603).

According to the fifth embodiment, the coordinates of the intersections forming all the house-shaped polygons 49 are corrected, and the house-shaped polygon data of the third database is the data of the twelfth house-shaped polygon 95. Only included.

Further, in order to determine the reduction ratio, the farthest intersection of the house-shaped polygons 49 included in the block 45 is found with respect to the center 87 of the block of all the blocks 45, and the intersection falls within the block 45. By doing so, all the house-shaped polygons 49 can be accommodated inside the corresponding block 45.

[0049]

As described above in detail, according to the present invention, the data of the house-shaped polygon is adjusted by a method having a small artificial difference and a high objectivity so that the house-shaped polygon does not run over the road or the like. It is possible to provide a graphic data adjusting method capable of performing the above.

[Brief description of drawings]

FIG. 1 is an explanatory view of the principle of the present invention.

FIG. 2 is a device configuration diagram showing an example of a system configuration.

[Figure 3] Illustration of the map database

FIG. 4 is a diagram illustrating a method of distinguishing and showing the protruding portion 51.

FIG. 5 is a flowchart illustrating a method of distinguishing and showing the protruding portion 51.

FIG. 6 is a diagram illustrating correction of polygon data.

FIG. 7 is a flowchart illustrating a method in which the protruding portion 51 is deleted and shown.

FIG. 8 is a diagram illustrating a method in which a protruding portion 51 is deleted and shown.

FIG. 9 is a flowchart illustrating a method of using a first dividing line.

FIG. 10 is a diagram illustrating a method of using a first dividing line.

FIG. 11 is a diagram illustrating a method of using a first dividing line.

FIG. 12 is a flowchart illustrating a method of using a second dividing line.

FIG. 13 is a diagram illustrating a method of using a second dividing line.

FIG. 14 is a flowchart illustrating a first method for reducing house-shaped data.

FIG. 15 is a diagram for explaining a first method of reducing house-shaped data.

FIG. 16 is a flowchart illustrating a second method for reducing house-shaped data.

FIG. 17 is a diagram illustrating a first method of reducing house-shaped data.

[Explanation of symbols]

1 ... 1st system 3 ... Host computer 5: Internal storage device 7a ... First map database 7b ... second map database 7c ... The third map database 8: Work map database 9 ... Application program 11 ... Work area 13 ......... Terminal 16 ... Display 17 ……… Keyboard 19 ……… Printer 49 ... House-shaped polygon 43 ………… Block line 51 ……… Overhanging part 81 ......... first dividing line 85 ……… The second dividing line 87 ………… The center of the block

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G06T 11/60-11/80 G06F 17/50

Claims (9)

(57) [Claims] 1. House shape data included in a predetermined target area is extracted from a first map database, and block line data included in the predetermined target area is extracted from a second map database, and the house shape data is extracted. Or of the block line data,
The first house shape data and the first house shape data obtained by coordinate conversion of either
In a system for creating a third map database including the city block line data, (a) calculating whether or not each of the first house shape data intersects with each of the first block line data Then, a step of determining whether or not the first block divided by the first block line data extends outward from the first block, and (b) in the step (a), the first house shape data is If it is determined that the first house shape data is outside the first block, the data of the line segment of the portion located outside the first block is regarded as the first out-of-range data, and
And a step of distinguishing the line segment data of the portion located inside the block as the second house shape data, the figure data adjusting method. 2. The graphic data adjusting method according to claim 1, further comprising a step of deleting the first out-of-range data distinguished in the step (b). 3. (e) In the steps (a) and (b), among the first block line data, single or plural block line data determined to intersect with the first house-shaped data are stored. , (F) surrounded by the second house shape data distinguished in the step (b) and the second block line data used in the step (e), 3. The method for adjusting graphic data according to claim 1 or 2, further comprising: a step of creating third house shape data. 4. The house shape data included in the predetermined target area is extracted from the first map database, and the block line data included in the predetermined target area is extracted from the second map database, and the house shape data is extracted. Or of the block line data,
The first house shape data and the first house shape data obtained by coordinate conversion of either
In a system for creating a third map database including the city block line data, (a) calculating whether or not each of the first house shape data intersects with each of the first block line data Then, a step of determining whether or not the first block divided by the first block line data extends outward from the first block, and (b) in the step (a), the first house shape data is If it is determined that the first house shape data is outside the first block, the data of the line segment of the portion located outside the first block is regarded as the first out-of-range data, and
The line segment data of the portion located inside the block of the second block as the second house shape data, (c) the step of deleting the first out-of-range data, and (d) the step (a). ) And (b), the first
Distinguishing one or a plurality of block line data determined to intersect with the first house-shaped data as second block line data from among the block line data of (e) the second block line data The step of providing a first dividing line that is separated from each block line constituting the block by a predetermined distance toward the center of the block, and (f) for each of the second house shape data,
Of the line segment data located on the outer side of the dividing line as the second out-of-range data, and the line segment data of the part located on the block side of the block line as the fourth house-shaped data. And (g) deleting the second out-of-range data, and (h) creating fifth house-shape data surrounded by the fourth house-shape data and the first dividing line. Step (i) For all the first house shape data, the judgment is performed by the step (a), and for the house shape data that is judged to be protruding in the step (a), the steps (b) to ( and a step of repeating h), and a graphic data adjusting method comprising: 5. The house shape data included in the predetermined target area is extracted from the first map database, and the block line data included in the predetermined target area is extracted from the second map database, and the house shape data is extracted. Or of the block line data,
The first house shape data and the first house shape data obtained by coordinate conversion of either
In a system for creating a third map database including the block line data of (a), for all the block lines forming all the first block line data, a predetermined distance from the block line to the center side of the block Providing a second dividing line at a distant position, and (b) for each of the first house-form data, the second
A step of determining whether or not it is protruding outward from a range delimited by the dividing line of (c), and (c) in the case where it is determined that the first house shape data is protruding in the step (b). Is the data of the line segment of the portion of the first house-shaped data located outside the second dividing line as the third out-of-range data, and is located closer to the center of the block than the second dividing line. A step of distinguishing the line segment data of the portion to be treated as the sixth house shape data; (d) a step of deleting the third out-of-range data; and (e) a step of deleting the second delimiter line. In steps (b) and (c), distinguishing one or a plurality of second dividing lines determined to intersect with the first house-form data as a third dividing line, and (f) the sixth dividing line. Surrounded by the house shape data and the third dividing line The step of creating the seventh house shape data, and (g) all the first house shape data are judged by the step (b), and in the step (b), the house shape data is judged to be protruding. And a step of repeating step (c) to step (f). 6. The house shape data included in the predetermined target area is extracted from the first map database, and the block line data included in the predetermined target area is extracted from the second map database, and the house shape data is extracted. Or of the block line data,
The first house shape data and the first house shape data obtained by coordinate conversion of either
In a system for creating a third map database including the city block line data, (a) calculating whether or not each of the first house shape data intersects with each of the first block line data And a step of determining whether or not the first block divided by the first block line data is outside the first block, and (b) the step (a) of the first house shape data. ), The house shape data determined to be protruding is
And (c) distinguishing a block including a part of the eighth house shape data from the first block as the second block, and (d) the second block. A step of determining a center point of the block, and (e) extracting, from the first house-form data, house-form data that is wholly or partly included in the second block, and forming a ninth house-form. (F) For each of the second blocks, the ninth house shape data is reduced at a predetermined ratio with the central point obtained in the step (d) as an origin, and A method for adjusting graphic data, comprising: a step of creating 10 house shape data; and (g) a step of deleting the ninth house shape data. 7. The house shape data included in the predetermined target area is extracted from the first map database, and the block line data included in the predetermined target area is extracted from the second map database, and the house shape data is extracted. Or of the block line data,
The first house shape data and the first house shape data obtained by coordinate conversion of either
A system for creating a third map database including the block line data, and (a) determining a first block surrounded by the first block line data from the first block line data. (B) For each of the first blocks, each of the first blocks
Determining the center point of each block, and (c) determining and extracting which part or all of the house shape data among the first house shape data is included for each of the first blocks. And (d) for each of the first blocks, the eleventh house shape data extracted in the step (c) is used as the eleventh house shape data. Creating a twelfth house shape data by reducing the center point obtained in step 1 as a starting point at a predetermined ratio; and (e) deleting all the first house shape data to obtain the twelfth house shape data. And a step of storing the house shape data of the above, and a graphic data adjusting method comprising :. 8. The graphic data adjusting method according to claim 1, wherein the first map database is a national land basic map database. 9. The graphic data adjusting method according to claim 1, wherein the second map database is a road ledger map database.