KR100216078B1 - Kxf/dxf data format translation method - Google Patents

Abstract

The present invention relates to a data conversion method for a Geographic Information System (GIS), and more particularly, to a method for converting a KXF data format to a DXF data format in a medium computer environment.

The present invention is a method for converting a KXF data format to a DXF data format, the initial environment of opening a KXF data file to be converted, creating a new DXF file, and converting drawing information of the KXF data file to be converted into a header portion of the DXF data format. Setting step; Extracting and converting KXF data type information into a layer table of DXF; Extracting line table information and annotation table information of KXF into a DXF table; Converting the KXF symbol information into a block portion of the DXF; A KXF spatial data conversion step of classifying KXF spatial data by type and converting the KXF spatial data into DXF data using a conversion function, characteristic information, table information, and layer information; And if the KXF spatial data to be converted does not exist, ending the operation, and if so, branching to the KXF spatial data conversion step.

Description

How to convert KXF data format to DXF data format

The present invention relates to a data conversion method for a Geographic Information System (GIS), and more particularly, to a method of converting a KXF data format to a DXF data format in a medium-sized computer environment.

Conventionally, the KXF (Korea standard eXchange Format) data format file is not converted to DXF (Data eXchange Format) file, so it is not possible to utilize geographic information or digital map constructed with KXF, the national standard GIS data format, in CAD system. there was.

In order to solve the above problems, the present invention converts the identity module and catalog / spatial domain module of KXF into a header part, a table part, and a block part of DXF, and each spatial object. The task is to integrate modules, related attribute modules, and schema modules and automatically convert them into entity parts of the DXF.

1 is a hardware configuration diagram applied to the present invention,

2 is a KXF data format diagram,

3 is a configuration diagram of the DXF data format,

4 is a diagram illustrating a process of converting a KXF data format to a DXF data format according to the present invention.

* Explanation of symbols for main parts of the drawings

1: central processing unit 2: main memory unit

3: input / output controller 4: auxiliary memory

5: input / output device

The present invention provides a method of converting a KXF data format to a DXF data format in order to achieve the above object, by opening a KXF data file to be converted, creating a new DXF file, and converting drawing information of the KXF data file to be converted into a DXF data format. Initial configuration step of converting to header part, extracting KXF data type information to DXF layer table, extracting KXF line table information, comment table information to DXF table, converting KXF symbol information Converting to DXF block part, converting KXF spatial data into types, converting KXF spatial data into DXF data using conversion function, characteristic information, table information, and layer information, and converting KXF spatial data Terminates the task if it does not exist and branches to the KXF spatial data transformation step if present. It is characterized by including.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a hardware configuration diagram of a medium-class computer to which the present invention is applied. As shown in FIG. 1, a central processing unit 1 for controlling and managing overall operations of a computer and performing a task and a program to be executed in the central processing unit are stored. And an auxiliary memory device (3) for controlling input and output of the auxiliary memory device, an input / output device, and an auxiliary memory device (4) for storing a large amount of data. And an input / output device 5 including a keyboard, a display device, a printer, and the like.

In the medium-class computer configured as described above, the main memory device 2 stores a program for converting the KXF data format of the present invention into the DXF data format, and is executed under the control of the central processing unit 1.

Next, features of the KXF data format and the DXF data format will be described.

2 illustrates the KXF data format. The KXF data format is composed of Spatial Database Transfer Standard (SDTS), which is defined as the US Federal GIS format, in the Korean GIS standard format. Part 1 defines the suitability of digital map data, conceptual model, etc., Part 2 defines attribute information and term definition for geographic information, Part 3 defines compatibility of spatial data using ISO 8211, Part 5, 6 contains vector and raster profile information, respectively. The KXF data format used for the conversion basically uses only the Part 4 vector profile part, and among the total 25 vector spatial object definition modules, identification, catalog / directory, data dictionary module, etc. Nine modules are used to switch between them.

3 illustrates the DXF data format. The DXF data format is composed of four parts, such as a header, a table, a block, and items, and various types of data elements are defined by drawing element group codes. The header part is composed of parameters having general information of the drawing, and the table part defines a layer, a line type table, and the like. The block portion is composed of several blocks used in the drawing, and one block includes several drawing elements. The item part contains the actual data list for the entity. Elements used in DXF include lines, polylines, circles, arcs, text, inserts, ATTRIBs, and dimensions. Each element has a separate format consisting of group codes. .

4 shows a process of converting the KXF data format to the DXF data format according to the present invention. After the conversion program is uploaded from the auxiliary memory device 4 to the main memory device 2 and the operation is started by the central processing device 2, the auxiliary memory device 4 receives the file name of the KXF data to be converted and the DXF file name to be generated. Open the KXF data file on the disk and create a new DXF file in the auxiliary memory (4), extract the drawing information of the data file to be converted, put it in the main memory (2), convert it to the header part of the DXF data format, and Perform the initial configuration process (S1) to add. After the above process, the KXF data type information extraction process (S2) of extracting KXF data type information in the auxiliary memory device 4 and converting it into a layer table of DXF on the main memory device 2 is performed. The KXF table information extraction process 53 is performed to extract the line table information, annotation table information, and the like, convert the corresponding table information into a DXF table form on the main memory 2, and add the same table information to the DXF file. After the above process, the KXF symbol information extraction process (S4) which extracts the KXF symbol information, converts the block portion of the DXF data format on the main memory device (2), and adds it to the DXF file is performed. After the above process, the KXF spatial data extraction process of extracting the spatial data of the KXF data file in the auxiliary memory device 4 and classifying the data types on the main memory device 2 is performed. Perform 55. Information related to the data type is extracted from the spatial data extracted in this process and classified into lines, curves, arcs, circles, symbols, and the like on the main memory device 2. After performing the above process, the data characteristic processing process of converting the characteristics of color, size, data type, etc. of KXF data into DXF data is performed. The color, line shape, font size, etc. of the extracted spatial data are extracted from the KXF table information extraction process ( 53), the line table and annotation table information extracted on the main memory 2 is referred to and matched with the data characteristics of the appropriate DXF data format, and the data type is converted into a layer of the appropriate DXF data format to convert the contents into the main memory. Store in (2). After performing the above process, it checks the case where the spatial data is a symbol, performs symbol processing to extract information such as symbol type, input position, scale, color, etc., and converts it into DXF data. Proceed (S5-1). After performing the auditing, if the spatial data has the defined attribute information, and if the defined attribute information, the attribute data conversion process of extracting the attribute information of the KXF data file and converting it into a DXF data file is performed. If not, proceed to the next step (S5-2). The attribute data conversion process uses the ATTDEF and ATTRIB entities of the DXF data format to convert DXF data having the same contents in block form.

After the above process, the spatial data conversion process (S6) is performed to convert the extracted spatial data into DXF data using the conversion function, the characteristic information on the main memory device 2, the table information, the layer information, and the like. A DXF data generation process 57 for adding the converted spatial data and attribute data is performed. After performing the above process, it is checked whether the spatial data to be transformed exists. If not, the conversion is terminated. If there is, the process branches to the KXF spatial data extraction process and repeats the process (S8).

As described in detail above, the present invention converts the KXF data format into the DXF data format so that the digital map or geographic information constructed in the KXF data format can be used in a CAD system, thereby reducing the time required for data construction and cost. It is accompanied by effects that can be planned.

In addition, a preferred embodiment of the present invention is disclosed for the purpose of illustration, those skilled in the art will be able to make various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications and modifications belong to the following claims You will have to look.

Claims (3)

A method of converting a KXF data format to a DXF data format, the initial configuration step of opening a KXF data file to be converted, creating a new DXF file, and converting drawing information of the KXF data file to be converted into a header portion of the DXF data format, Extracting KXF data type information to DXF layer table, extracting KXF line table information, annotation table information to DXF table, converting KXF symbol information to DXF block part, KXF space The KXF spatial data conversion step of classifying data into types and converting them into DXF data using a conversion function, characteristic information, table information, and layer information. If the KXF spatial data does not exist, the operation is terminated. DXF to KXF data format, characterized by branching to data conversion step. How to convert to data format. The method of claim 1, further comprising: a symbol processing process of extracting information such as symbol type, input position, scale, color, and the like into DXF data when a symbol exists in the spatial data in the KXF spatial data conversion step; Converting the KXF data format to the DXF data format. The method according to claim 1 or 2, wherein when attribute data exists in the spatial data in the KXF spatial data conversion step, the ATTDEF and ATTRIB entities of the DXF data format are converted into DXF data having the same contents in block form. To convert the KXF data format to DXF data format.

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