According to the x, y coordinates, using the procedures in mapinfo automatically...

应用背景物理大地测量中，将大地坐标系转换为球坐标系。大地坐标系是建立在一个椭球基础上的坐标，先转换成地心笛卡尔坐标系，然后由地心笛卡尔直角坐标系转换为地心球坐标系。关键技术 输入文件Input.dat 格式 B L H， 转换的椭球参数为 椭球长半径 a=6378137m, 扁率倒数为298.257223563。先转换为笛卡尔球心直角坐标系，然后进一步转换为 球坐标系，输出文件为 convert.dat

axl解释和生成-interpretation and generation

广西南宁09年最新矢量地图(MapInfo格式)-Nanning, Guangxi, in 2009 the latest vector map (MapInfo format)

正态分布的图形演示 本题用c语言编写的画图程序要在tc2.0下运行. 其余程序在各种编译器下可以运行,-normal graphic demonstration that the use of language c drawing program to tc2.0 running. The remaining procedures in the various compiler can run under, -Graphic demonstration of normal distribution with the title c languages Paint program to run under tc2.0. The rest of the procedure in a variety of compiler can be run,-normal graphic demonstration that the use of language c drawing program to tc2.0 running . The remaining procedures in the various compiler can run under,

超图公司的supermap objects5开发版中级教程，欢迎大家下载，共同提高-Hypgraph company supermap objects5 development version Intermediate Guide, we are happy to download, upgrade

后方交会 后方交会 后方交会 -sdfgsadgd

基于MO组件，实现图和多媒体属性库之间的热链接，很简单。-MO-based components, the realization of plans and multi-media properties of the hot links between the Treasury, is very simple.

应用背景物理大地测量学中，经常用到两点间的方位角，已知球面两点大地经纬度坐标，求解两点间的球面方位角。假设地球为球形进行的计算。关键技术通过两点的大地经纬度坐标，计算两点球面坐标方位角。需要输入文件INPUT，输入格式 纬度 经度 大地高（或正高），可以是一组数据也可以是连续的多个数据，排列顺序是按列三列数据。计算出的方位角是以第一个点到第二个点的方位角。例如，假如序号为1,2,3,4……。那么求出的方位角为α1-2，α2-3，α3-4……。输出文件为fangweijiao.dat

读写ESRI公司Shape格式文件的C底层类库，十分简洁强大，大名鼎鼎的OGR library中对Shape文件的IO就是用的这个库，包含完整代码，文档和测试工程，或用于C/C++，C#，VB等-Read and write ESRI, Shape file format underlying C library, a very concise powerful, the famous OGR library of Shape files IO is to use the library, contains the complete code, documentation and testing projects, or for C/C+ 2B !, C#, VB, etc.

生成tin（不规则三角格网）的算法，根据区域的有限个点集将区域划分为相等的三角面网络-Generation tin (irregular triangular grid) algorithm, according to the region will be a finite number of points equal to the region is divided into triangular surface network