mapnik2.1地图渲染引擎代码 mapnik是一个免费的地图开发工具。由C++编写，与python绑定支持快速敏捷的开发。-mapnik2.1 map render engine sourcecode. Mapnik is a Free Toolkit for developing mapping applications. It is written in modern C++ and has Python binding

该代码实现将基本的地图匹配功能,讲GPS获取到的数据与路网匹配，并将偏移道路的数据拉回道路上-this python code complet function that map matching

将ARCGIS的MXD文件转换为PDF的python代码。-A simple tool to convert multiple map documents into a multi-page PDF document. This scr ipt will export multiple map document layoutinto a single # output PDF file. The scr ipt

python实现mean average precision。这是转载网上其他地方的，非自己实现的。(calculate mean average precision)