A method and system for retrieving topographic map data based on shp format

Abstract

The present invention provides a method and system for retrieving topographic map data based on the shp format, relating to the technical field of topographic map data processing, searching for a subfile path with a shp suffix under a preset path; and processing each found shp file and numbered, and saved in the numbered buffer pool; determine whether the numbered buffer pool has a number with a preset condition; if it has a number with a preset condition, it means that there is full-element data in the basic scale topographic map, and the full-element data The path is saved to the result cache pool; the full feature data contained in each folder path is obtained by parsing and saved to the result cache pool. The present invention does not rely on ArcGIS and other GIS software, can designate any folder as the root directory to start scanning and output the result information, has the characteristics of high efficiency, easy operation, and accurate results, and can effectively solve the shortcomings of manually identifying all-element data.

Description

technical field [0001] The invention relates to the technical field of topographic map data processing, in particular to a method and system for calling topographic map data based on shp format. Background technique [0002] The shp format is a file format commonly used by the geographic information data editing software ArcGIS. It is a file that can store geographic information data. The full name is a shape file. The shapefile contains a master file, an index file, and a dBASE table. Since the suffix of the main file is .shp, all shape files are collectively referred to as shp files. [0003] Because ArcGIS is widely used in government, enterprises, schools and other related departments and organizations of geographic information data, the shp format has become one of the main file formats for storing geographic information data. [0004] Because the classified topographic map data contains geographic information data, it is very important and critical to protect the cla...

AI Technical Summary

Problems solved by technology

[0005] At present, the confidentiality inspection and security protection of the shp format of the secret-related basic scale topographic map are usually reviewed by geographic information experts on site, and the shp format is opened by ArcGIS software for software operation and naked eye recognition, lacking a professional geographic information Software to accurately and efficiently identify whether it contains all-factor data

This method of confidentiality inspection, which uses human-operated software to identify and distinguish, is not only inefficient, but also prone to misjudgments and omissions, and even the risk of secondary data leakage, so there is a huge security risk

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