一个多少人踏遍铁鞋多找不到的GIS系统源码，今天我贴出来给大家共享...

该源代码用于伪Linux/Unix系统简历地理信息系统（GIS).该代码支持矢量格式和光栅格式-the source code for the pseudo-Linux/Unix systems curriculum vitae Geographic Information System (GIS). The code format support vector and raster format

包括部分空间算法，如计算两坐标点距离、判断两坐标点是否相等、计算叉积、计算点积、判断点p是否在线段l上、计算点bp以点op为圆心逆时针旋转dAlpha(单位：弧度)后所在的坐标点位置、计算指定半径圆上指定角度的弦长、计算由起点坐标和终点坐标构成的线段在指定距离和指定方向的垂点坐标等空间算法-Including some space algorithms, such as calculating the distance between the two coordinates to determine whether the same two coordinates to calculate cross product, point multiplication calculation to determine whether point p on line l above the calculation point to point op for bp counterclockwise rotation center dAlpha (units : radian) after the location where the coordinates of points, calculated on the specified radius of a round angle specified chord length, calculated from the starting point coordinates and end coordinates of the line constitutes a specified distance and specified direction of the vertical space coordinate algorithm

在菜单中显示小图标,用c语言编写,下载之后请解压在c语言环境下运行-the small menu icon indicates that c language, please download after decompression in c-language environment to run

应用背景在物力大地测量学中，重力异常的计算，需要测量计算点的重力值和计算测量点的正常重力。计算正常重力时，需要已知计算点大地坐标，即经度、纬度和大地高，如果采用GPS采集数据，那么获得的大地坐标的参考椭球是WGS84。关键技术此程序，采用WGS84参考椭球参数，因此输入数据为WGS84大地坐标，顺序为，纬度、经度、大地高。输入文件为，Input.dat。输出文件为，output.txt。计算结果为，椭球面以上高程为h处的正常重力。如果将大地高设为0，那么计算结果为此点处参考椭球面上的正常重力。

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.

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.

是NET2003+ArcEngine91的开发框架， 在此基础上可以专心的进行业务逻辑的开发-Is NET2003+ ArcEngine91 the development framework, based on this conduct can concentrate on business logic development

基于Java的逻辑回归实现，带有完整测试数据集

vc++ MapX二次开发中问题较多的中文标注的解决。在地图上标绘图标，可输入经纬度精确定位，并显示最多可输入50个汉字的标注，图标在地图上拖动移位，图标删除等，附带缩放、漫游、归心、状态栏显示当前鼠标位置经纬度等基本功能。-vc++ MapX secondary development of the Chinese are more marked resolved. Drawing on the map superscript superscript, enter the latitude and longitude accurate positioning, and display up to 50 Chinese characters input tagging, drag the icon on the map shift, delete the icon, etc., with zoom, roam, in the heart, the status bar displays the current mouse and other basic functions of latitude and longitude position.

简易车辆导航系统，实现地图匹配，电话号码，单位设施，最优道路检索