3维地理信息系统数据模型的设计，很好的例子帮你解决问题

十分强悍的墨卡托投影反算程序。方便大家下载-Very powerful anti-Mercator counting procedures. Easy to download U.S.

嵌入式gis开发包，可以移植到windows CE,希望对大家有所帮助。-Gis Embedded Development Kit, can be ported to multiple operating systems.

用AE在VC环境中右键删除图层，左键选择图层并移动图层。-AE in the VC environment with the right to delete layers, select layers and move layers left.

开关量控制应用，利用板卡控制外部设备，性能可靠

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,

WIN XP下操作并口的最好控件，有中断、位等，代码DEMO很丰富。-WIN XP parallel port to operate under the best control, have interrupted, etc., code DEMO very rich.

This program demonstrates the usage of the select() routine.

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

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

vb实现点状符号的绘制，并实现放大缩小功能，-vb realize punctate drawing symbols and realize zoom function,