移动地理信息系统的地图定位，采用了双缓冲区。

处理dem的东东，不错，请大家试用 -dem handle the Eastern, yes, please probation probation

Navit is a open source (GPL) car navigation system with routing engine. It s modular design is capable of using vector maps of various formats for routing and rendering of the displayed map. It s even possible to use multiple maps at a time. The GTK+ or SDL user interfaces are designed to work well with touch screen displays. Points of Interest of various formats are displayed on the map. The current vehicle position is either read from gpsd or directly from NMEA GPS sensors. The routing engine not only calculates an optimal route to your destination, but also generates directions and even speaks to you.

Geomedia 的二次开发教程及试验代码，VB语言，不过通过升级能在VS2005下使用。-Geomedia the secondary development guidance and test code, VB language, But through escalation in the use VS2005.

对Arcgis进行编程的一个实例,希望对大家有所帮助-ArcGis programming of an example, in the hope that U.S. help

安徽09年最新矢量地图(MapInfo格式)-AnHui vector maps like map (MapInfo format)

这是一份原创的智能技术大作业，里面包含天津市公交地图主要标识点，并采用xml描述标识点，A*算法进行公交网络寻路查找，最后编写了MFC界面帮助人机交互。代码在vc6.0下运行正常，对初学者有一定参考价值。

.net 和 ArcEngine 开发程序 ToolbarControl 的应用-. net and ArcEngine the application development process ToolbarControl

地理信息系统讲义之二!-GIS lectures bis!

创建空间索引结构R树的源程序，解压后的文件中有readme文档。-create spatial index R-tree structure of the source, the paper after extracting a readme file.

求最短路径的算法-seek the shortest path algorithm