Research and Application of Coordinate Transformation Tools Based on ArcGIS for Multiple Internet-based Map Data
Most internet-based map data coordinates have a certain deviation from internationally-accepted WGS84 coordinate system. However,with the development of the internet,the application of internet-based map data in the field of urban planning has become more and more extensive,which can not match the base map of the China Geodetic Coordinate System 2000,and the project is highly confidentiality. To solve this problem,an Amap coordinate transformation tool was constructed with ArcGIS 10. 2 software using Python language with open source correction algorithm. Moreover,on regard to the coordinate transformation from WGS84 to Baidu Map,we proposed the least squares adjust-ment model to conduct error compensation,which improved the accuracy of the original algorithm. Finally,the experimental results show that,taking the current data involved in the project as an example,this Amap coordinate transformation toolbox can quickly transform vector and raster data coordinates and improve the accuracy of data in general.
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