JPS6365476A - Retrieval display for graphic data - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for searching and displaying drawing data that has a wide range of uses, and is particularly applicable to inputting and outputting a plurality of adjacent drawings such as maps in relation to each other. The present invention relates to a suitable method for searching and displaying drawing data.

[Conventional technology]

Conventionally, various map information systems that can be displayed on a CRT display have been announced by creating a database by linking graphical data such as maps and facility diagrams with attribute values such as water pipes and water supply pipes, and quickly searching for items needed for searching. (pixel (
PIXEL)' 85 December issue Ma 39Pp96-138
), L, in these map information systems,
There is a limit to the number of drawing data that can be retrieved and displayed at one time by integrating adjacent drawings such as topographic maps and facility maps, and if the scales are different, they cannot be displayed at the same time.

[Problem that the invention seeks to solve]

According to the above-mentioned conventional map information system, no consideration is given to the integrated management of data on multiple adjacent drawings, and there is a problem in that it is not possible to connect arbitrary scale drawings unique to maps or to cut out drawings that span multiple drawings.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for retrieving and displaying drawing data, which makes it possible to cut out a free area of a drawing without increasing the data capacity.

[Means for solving problems]

The above purpose is to have multiple graphic file drawings and maps, and to divide the coordinates representing the famous garden into the minimum unit drawing coordinates and the overall coordinates that indicate the adjacency relationship of those drawings. This is achieved by extracting and searching and displaying the adjacency relationships of a plurality of figures based on a map that correlates to which position they belong.

[Effect]

When the drawing management system receives a search request for multiple adjacent drawings,
Since the coordinate values are calculated by combining the number of graphic data to be connected in the vertical and horizontal directions around the corresponding graphic data and the original standard value, adjacent drawings can be freely integrated, and even if the graphic scales are different, the scale can be unified. can be integrated.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

First, the system configuration for carrying out the present invention will be explained with reference to FIG. In FIG. 5, 3 is the C that executes the process.
PU, 4 is a main memory for storing programs for executing processes such as searching and editing graphic data, and data being processed; 5 is a file device for storing drawing data; 6 is a vector for storing drawing data. 7 is a CRT display for displaying drawing data; 8 is a keyboard for inputting commands; 9 is a tablet for inputting coordinate positions; 10 is a drawing input device for inputting coordinate positions; This is a cursor for giving instructions.

With such a system configuration, the drawing data shown in FIG. 6 is displayed.

FIG. 6 is a diagram illustrating the concept of positional relationships in which multiple adjacent graphic data are indexed from a data file and individual graphic data are combined with adjacent countries, where the Y-axis and Y-axis are two points on the map.
It is used as a coordinate axis to indicate dimensional expansion. It is assumed that adjacent figures are connected by broken line figure data boundaries, as can be seen from FIG. 6 (■). The graphic data is shown in Figure 6 (1
), each drawing is input one by one. Therefore, adjacent drawings are not necessarily arranged in an easy-to-search arrangement depending on the work order, and boundaries of graphic data do not necessarily match due to differences in drawing scale and drawing reference position. Therefore, in order to uniformly manage the coordinates of such a plurality of adjacent graphic data, a graphic data search and display method as shown in FIG. 1 is adopted.

In Fig. 1, in order to manage the reference point coordinates of figure data i consistently with other figure data, the origin of the whole figure data is set as the Y axis, the origin of the Y axis, and the positional relationship from this point is as follows: Manage using one offset coordinate.

■(LOX+, LOY+): Large offset coordinates.

This is an offset to the reference point of the figure using a large unit α.

■(SOX+, SOYt): Small offset coordinates.

This is the remaining offset after subtracting the offset of L OX i xα from the total offset.

■(M OX I, M OY I): Map offset column.

This is the value from the origin to the reference point in one graphic data.

Here, the reference point refers to a portion where a point of a figure and a point of global coordinate system data overlap.

When the reference point of graphic data 1 is determined using the above three offset coordinates, the reference point is expressed in the global coordinate system as follows.

FIG. 2 is a map for managing the coordinate relationships when these graphic data are mapped. If the unit for storing graphic data is expressed as a file, each graphic data P Of ,
The origin coordinates of Pox...PIl in the global coordinate system are expressed by large offset coordinates, small offset coordinates, and map offset coordinates.

<Method for creating the map (FIG. 2)> Next, a method for creating the map shown in FIG. 2 will be described.

In the system configuration diagram shown in FIG. 5, graphic data is created by inputting a drawing using the drawing input device 6 or by sequentially following a drawing placed on a tablet 9 with a cursor 10. Graphic data is obtained by digitizing points and lines on a drawing and converting them into X-axis and Y-axis coordinates. The input graphic data are each stored in a file Na.
is attached and stored in the file device 5. On the other hand, large offset coordinate values and small offset coordinate values, which are the positional relationships of these graphic data in the global coordinate system, are displayed on the CRT display 7 with the axes of the global coordinate system.

Display the cursor position on the tablet 9, move the cursor 10 to the coordinate reference position, move the cursor 10 to the origin coordinate axis of each figure data in the global coordinate system, and press the button on the cursor 10.

A request to input the rake value at that time is given to the CPU 3.

Obtained by reading the cursor position at that timing. The calculation at this time is based on the following equation.

α Here, α is determined by the size of the area that the target drawing constitutes, and takes a value of 1, for example.

These operations are repeated as many times as the number of origin coordinates of a plurality of figures are associated with a file Nα representing one figure data, and stored in the file device 1!5 in the format shown in FIG.

<Method for connecting arbitrary scale drawings> Next, a method for connecting arbitrary scale drawings will be described. For example, as shown in Figure 3, 11
Let's consider a method of creating a 500 scale map and connecting it to an already created 11,500 scale map.

In FIG. 3(a), it is assumed that the 1/2500 scale map 11 and the 11500 scale map 14 of one graphic data are adjacent to each other.

Now, a method for creating a 11500 scale map from the 1/2500 scale map 11 will be described below. 1/2500 scale map 1
1 in the X-axis and Y-axis directions from the origin Pj
When divided, 25 cut-out figures are created. Among the cut-out figures, attention is paid to a figure 12 having the same origin as the original 1/2500 scale figure 11 and its adjacent figure 13. Figure 12.1
3. To unify the drawings to a scale of 11,500, the cut-out figures are multiplied by 5 in the X-axis and Y-axis directions. At this time, the origin coordinate management is performed by moving the original figure 12 to 1150 as shown in FIG.
This is the same as the origin Pj of the figure 15 enlarged to 0 scale. Also, a figure 16 that is an enlarged version of the original figure 13 to a scale of 11,500.
The origin Pk'(xok',yOk') of is obtained as follows.

x oh' = x oj+ (XOJ xoi):
2xoa Xoi...(3)XOi
=LOXtXα+5OXt ・=(4)XOJ
=LOXnXcx+5OXa...(5)(4)
, substituting equation (5) into equation (3), x o k' =
a (2L OX JL OX i)+2SOX
J 5OXI -CG) Similarly, y Ok+ = a (2LOYJ LOYl
) + 2 S OY s S OY r ・・
(7) Therefore, the large offset coordinates (L OXm' , LOYb' ) and small offset coordinates (S OXk' - S OYb' ) of the figure 16 are expressed as follows.

In this way, the origins of other 25-divided figures can also be determined.

<Method for cutting out adjacent drawings> A method for cutting out a plurality of adjacent drawings in a free area will be described.

Using the coordinate management map for each graphic data shown in FIG. 2, the target graphic data is searched and an adjacent view as shown in FIG. 4 is displayed on the CRT display 7 in FIG.

If we specify the coordinates with the cursor 10 on the tablet 9 and cut out the 11500 scale figure data 17 from the 11500 scale figure 15 and an adjacent figure formed by three figures adjacent to it, the figure data 17 will be cut out from the origin P' j (X
Take new coordinates based on OJ'tyOJ' ). That is, the origin of the newly cut out graphic data 17 in the global coordinate system is expressed by the following equation.

Here, QX and QX indicate the relative position of the origin Pj' from the origin Pj. Furthermore, by converting into large offset coordinates and small offset coordinates, equation (10) becomes as follows.

XOJ' =LOX4Xa+5OXa+nx=L O
X t X (x + S OX a + L X j
'×α+Sxj' = (LOXa+Lxj')a+5OXJ+Sx
j・ ... (11) Similarly, yoa = (LOYa+Lyj')α+5OYJ+s
yj... (12) Therefore, the large offset coordinates (L OX
a', LOYa') and small offset coordinates (SOXJ', 5OYa') are expressed as follows.

From equations (11) and (12), that is, by the coordinate management shown by equations (13) and (14), the adjacency relationship of figure 17 can be searched and displayed in the same way as other figure data, and it is registered as a new figure. be able to.

〔Effect of the invention〕

As described above, according to the present invention, adjacent maps of different scales can be managed using consistent coordinates, so adjacent maps unique to the map can be connected without increasing the data capacity.
This has the effect of allowing you to cut out free areas of the drawing.

[Brief explanation of the drawing]

1 to 5 show embodiments of the present invention. FIG. 1 is a conceptual diagram showing the correspondence between adjacent drawings, FIG. 2 is a coordinate system correspondence map diagram of multiple adjacent drawings, and FIG. Figure 3 is an explanatory diagram to explain how to connect arbitrary scale drawings, Figure 4 is an explanatory diagram to explain how to cut out multiple drawings into free areas, and Figure 5 is a block diagram showing the system configuration. 6A and 6B are explanatory diagrams for explaining coordinate management of a graphic data file that performs consistent coordinate management. 1... Figure data origin, 2... Figure data reference point,
39...tablet, 10...stylus.

Claims (1)

[Claims] 1. A storage unit that files multiple large drawings that have adjacent drawing relationships such as maps, a drawing input unit that inputs drawing information to be stored in this storage unit, and a display that displays drawing search results. , an operation input section for executing management processing, a coordinate input section for specifying the position coordinates of the management drawing, a temporary storage section for adding processing such as search, and executing each of the above functional sections. In a method of searching and displaying drawing data using a device equipped with a processing unit for processing, a drawing file contains multiple drawings and map information, and the coordinates necessary to express each drawing are converted into the minimum unit of drawing coordinates. The adjacency relationships of multiple figures are extracted based on a map that maps the position of each figure in the global coordinates, and the global coordinates that indicate the adjacency relationships of these figures. A method for searching and displaying drawing data, characterized by searching and displaying drawings.