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Method for lossless conversion from CASS data to Shapefile data

A data lossless, data format conversion technology, applied in the field of CASS data to Shapefile data lossless conversion and data format lossless conversion, can solve problems such as graphics and attribute loss, and achieve the effect of expanding the application field, good practicability and flexibility

Pending Publication Date: 2022-08-02
ANHUI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the CASS software itself also provides the function of converting to Shapefile data, its conversion algorithm will cause the loss of graphics and attributes

Method used

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  • Method for lossless conversion from CASS data to Shapefile data
  • Method for lossless conversion from CASS data to Shapefile data
  • Method for lossless conversion from CASS data to Shapefile data

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Embodiment Construction

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] A method for lossless conversion of CASS data to Shapefile data, comprising the following steps:

[0027] 1) In-depth comparative analysis of CASS data and Shapefile data in terms of file format, graphic entity type, data organization method, graphic entity attribute expression method, etc., and mining the similarities and differences between the two data formats;

[0028] 2) In order to realize the lossless conversion of graph...

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Abstract

The invention discloses a method for lossless conversion from CASS data to Shapefile data, which is based on a CAD secondary development tool TIGA and a GIS secondary development tool MapWinGIS, studies and constructs an appropriate conversion module, realizes lossless conversion from the CASS data to the Shapefile data by adopting a simple programming method, is simple and easy to implement, has better practicability and flexibility, and can be used for realizing lossless conversion from the CASS data to the Shapefile data. And the defect that most operators engaged in data library building do not have the programming capability can be overcome. A corresponding conversion method is provided according to data characteristics of the CASS surveying and mapping result and problems needing to be paid attention to in the data conversion process, the purpose of lossless data conversion can be achieved, the application field of the CASS surveying and mapping result is expanded, and the CASS surveying and mapping result can meet analysis and application of a GIS system.

Description

technical field [0001] The invention relates to a lossless conversion of a data format, in particular to a method for lossless conversion of CASS data to Shapefile data, belonging to the field of digital geographic information. Background technique [0002] CASS is a mapping software developed by Southern Company under the Auto CAD platform. It is mainly used in the three major fields of terrestrial mapping, cadastral mapping, and engineering surveying. Used by most surveying and mapping departments. Shapefile is an open format for spatial data developed by the Environmental Systems Research Institute (ESRI), which has become an open standard in geographic information software. Although CASS has powerful mapping capabilities, today's surveying and mapping results are not only graphical and electronic, but also meet the deep application of attribute query, spatial analysis, and scientific statistics. Therefore, digital mapping requires that the surveying and mapping results...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/11G06F16/17
CPCG06F16/116G06F16/173Y02D10/00
Inventor 张震朱建坤徐良骥谷正楠王蕾蕾李延杰
Owner ANHUI UNIV OF SCI & TECH
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