根据椭球大地坐标求正常重力

Terrain_example_source：生成3d地形的代码，对开发GIS等有帮助。-Terrain_example_source : 3d terrain generated code Development of GIS and other help.

环保模型，包括水污染模型，大气污染模型及爆炸模型，基于ArcGIS Engine开发。-Environmental models, including water pollution model, air pollution models and explosion models, based on ArcGIS Engine development.

vc+ArcEngine建立框架程序:制作浮动可变大小的控制窗口，可以实现图层拖放-vc+ ArcEngine procedures for the establishment of the framework: the production of a floating variable to control the size of the window, you can drag and drop layers to achieve

采用ArcGIS9.0 中的ArcServer加VB开发的程序。可进行联接、网上信息发布等。- Uses in ArcGIS9.0 ArcServer to add the VB development the procedure. May carry on the joint, the on-line information issue and so on.

半个GIS系统 只是开始-half a GIS system is only the beginning

arcserver9.2安装与配置GIS开发的好帮手，不会的可以看看。-Installation and Configuration arcserver9.2 good helper GIS development will not take a look at the can.

ArcIMS 实例程序，用于展示IMS地图服务。-ArcIMS example procedure for display IMS map service.

MapXtreme .net 实现图块缓存源代码。-MapXtreme code of map tile coding.

数字摄影测量学的影像重采样，包括直接采样法和间接采样法-digital photographic surveying the image resampling, including direct and indirect sampling sampling method

实现.net平台下mapobject的图例功能，修改了原来legend控件不能在.net平台下应用的缺陷。-Realize. Net platform MapObject the legend function, modification of the original legend should not in control. Net platform application defects.