根据椭球大地坐标求正常重力

用openGL调用ERIS的*.shp格式的地图文件-ERIS with openGL call of the*. shp format map files

一个汉字转换成拼音的小程序，但多音字问题还没解决，给大家共享-a Chinese phonetic conversion of small programs, but they sound word problem has not yet been solved, to share

一个用vb对mapinfo做二次开发的例子,此例子的功能虽然简单,但含盖了很多知识点,如mapinfo的回调,各种空间功能的实现等-with a pair of MapInfo do the secondary development of examples, examples of this function is simple, it covers a lot of knowledge, such as MapInfo callback, the space functional realization

鹰眼实现(vb+mapx50)-breath-5, a program file to show that I will be my last set of five procedures is described.

Class Shortest models a shortest path calculation between two registered users.

一个ArcGIS Engine的初级例子~-a primary example ~

比较经典的图形算法的集合，对于初学图形的人十分有用，希望大家喜欢-more classic collection of graphics algorithm for novice graphics were very useful and hope you like

ArcGIS Engine没有提供在MapControl中点击查询的命令，只是提供了ReaderControl中的使用的点击查询的命令，下面的代码就是实现点击查询并闪烁的代码。-ArcGIS Engine does not provide in the query by clicking MapControl orders, only provides a ReaderControl use clicks query command, the following code is to achieve the query and click on the flashing code.

根据arcgis engine进行二次开发，实现出租车的路线查找以及推荐，主要利用vs2010实现，语言为C#，功能比较简单

GIS(电子地图信息系统)-GIS (Electronic Map Information Systems)