GIS编程，AE+C#缓冲区分析，AE+VB缓冲区分析

vb+Mapinfo开发之最短路径，同时还有SQL查询等功能-vb+ Mapinfo development of the shortest path, along with features such as SQL Query

北航新地图改版，是GIS的一个作业，对现有地图进行修改！-BUAA revised new map is a GIS operations, modifications to the existing map!

ArcGIS for JavaScript开发者示例代码

基于MAPX的GIS应用，ASP.net，c#开发，实现了地图放大查询等功能 -MAPX of GIS-based applications, ASP.net, c# Development, the realization of the map to enlarge the functions of query

flex的在地图上显示谷歌地图某个位置的程序-flex

gis 底层开发-gis underlying the development of

Navit is a open source (GPL) car navigation system with routing engine. It s modular design is capable of using vector maps of various formats for routing and rendering of the displayed map. It s even possible to use multiple maps at a time. The GTK+ or SDL user interfaces are designed to work well with touch screen displays. Points of Interest of various formats are displayed on the map. The current vehicle position is either read from gpsd or directly from NMEA GPS sensors. The routing engine not only calculates an optimal route to your destination, but also generates directions and even speaks to you.

地理信息系统,实现地图街道、车站、路口等信息的用户动态定义。-geographic information system that maps the streets, railway stations, road junctions and other information users dynamic definition.

地理信息系统的设计和实现-Geographic Information System Design and Implementation

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