根据椭球大地坐标求正常重力

用C#开发的地理信息系统源码-Source code in C# which focus on the GIS

用动态链表实现求凸壳的程序（卷包裹法），供三角网实现编程的人参考-Using dynamic list for the Convex Hull of the realization of procedures (vol Parcel law) for the triangular network programming reference

MATLAB和VC++混合编程实现行程编码压缩，以VC++为主要平台，采用混合编程的形式，用MATLAB来调用MEX函数所编写的DLL，实现文件压缩。-MATLAB and VC++ Matlab Coding trip to VC++ As the main platform, the form of hybrid programming using MATLAB function to call the MEX prepared DLL, file compression realize.

MapX之VC设置非地球坐标系, 【环境】：vc6+mapx4.5+win2k+sp3 【提示】：CoordSys.set设置非地球坐标系时，必须定义坐标范围 -MapX Zhi VC set up in the earth coordinate system, the environment : vc6 mapx4.5 win2k sp3 suggested : CoordSys.set set up in the earth coordinate system, the scope must be defined coordinates

arcgis server9.2客户端js说明手册-arcgis server9.2 client js instruction manual

arcgis server 内容，主要是方便自学，是多个有用文档的集合。-arcgis server content for the convenience of self-learning, are more than a collection of useful documents.

 This project allows you to track cell phones periodically. For instance every minute or every five minutes. You can watch the cell phone being tracked in real time using google maps and you can store and reload routes easily. You have the choice of two server stacks. Either using asp.net and sql server or using php and mysql. Historically, devs have downloaded the asp.net server project 2 to 1 over the php project. I have included both now in the same download but you only need to use one.

德国的一个svg地图--社会模式与结构分析-Germany a svg map-- social model and structure analysis

VB+MO实用开发例子：第一章：GIS开发简介；第二章：MO/VB二次开发入门；第三章：使用地图和图层，有详细的说明和例子；第四章：坐标系和几何对象；全书共九章，pdf格式。-VB+ MO practical development examples: First Chapter: GIS development profile Chapter: MO/VB secondary development of entry Chapter III: Using maps and layers, contains a detailed description and examples Chapter IV: coordinate system and geometry object book a total of nine chapters, pdf format.

Visual C++开发GIS系统开发实例剖析-Visual C++ Development of GIS system development examples of analysis