根据椭球大地坐标求正常重力

广州09年最新矢量地图(MapInfo格式)-Guangzhou in 2009 the latest vector map (MapInfo format)

基于ArcGIS Engine符号化,在给定符号库（.style）文件和需要符号化的字段的条件下，同时对每个图层相应的字段进行符号化。-Based on ArcGIS Engine symbolic, in a given symbol libraries (. Style) file and the need for symbolic field conditions, while the corresponding fields for each layer symbolic.

构建Delaunay三角网的源程序，采用vb6.0加ae9.1环境下开发-Construction of Delaunay Triangulation source, using VB6.0 development environment plus ae9.1

vb通讯《GIS开发者》Visual Basic 是Mcrosoft公司推出的强有力的系列开发软件之一，而且以其实用、方便、快捷、开发周期短、广泛而强大的功能越来越被广大编程人员所亲赖，广为流传，似乎有些专业的编程人员放弃了Visaul C++ 而改用了Visaul Basic之类的RAD编程工具，尽管Visaul C++在灵活性、代码紧凑、运行速度快及底层开发等方面Visaul Basic无法比拟的，但编写C++应用程序过长的调试和开发周期确实有点不适应当今的应用程序开发环境。-vb communications, "GIS" Visual Basic is Mcrosoft launched a series of powerful software development, but its practical, convenient, fast and short development cycle, extensive and powerful features are increasingly the majority of programmers are pro-Lai, the most widely circulated, it appears that some professional programmers abandoned FoxPro C and switch to the Basic FoxPro like RAD programming tools, despite the flexibility of C FoxPro, code compact, fast operation and development, and so on the bottom FoxPro Basic incomparable, but the C application debugging and long development cycle is really not suited to today the application development environment.

代码包括图形文件的读入、显示等完整的程序代码，是实现对图形文件的一系列操作的基础。

window下的开源gis系统,visual编译-open source in window, using visual studio2005

C# 和 ArcGIS Engine 开发运用 实例 程序 开发 环境为.NET-C# and ArcGIS Engine examples of the development and application of procedures for the development environment.NET

基于windows mobile的gis开源代码-Windows mobile based on the gis open-source code

城市地理信息系统- City geographic information system

gis图标大全，供学习参考使用,界面工具图标，tools等等等