Engineering application method of extracting traffic road data from electronic map
A technology for electronic maps and road data, applied in special data processing applications, electrical digital data processing, instruments, etc., can solve the problems of poor application of multi-scale electronic maps, difficult development, time-consuming and laborious, etc., to save The cost of data collection, the improvement of design efficiency, and the effect of high operating efficiency
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[0010] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0011] The invention realizes the semi-interactive vector traffic map data collection, automatic conversion and project map output under any project plane through the route query function API function of GoogleMaps. When extracting roads, you only need to select the starting point and end point of the route on the network map and optionally input the route points, and then you can accurately obtain the XML data of the road information through API route query, and analyze the vertices of the route through the XML data That is, the KML element output of the path can be formed, and at the same time, the invention provides the DWG engineering drawing file that the KML file can be transformed into any coordinate system. The specific steps are:
[0012] 1. Extract digitized vector elements from GoogleMaps and output KML files: through the route que...
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