GIS地图开发过程中用来计算各种几何图形的源码库，开发地图导航，测量等项目十分有用。-GIS map development process used to calculate the geometry of the source of various libraries, the development of map navigation, surveying and other very useful item.

这是一个Linux下的用C++写的QuadTree的LOD程序！希望对学习Linux编程的有帮助-This is an under Linux using C++ written in the LOD procedure QuadTree! Wish to study Linux programming help