Delphi开发平台的GIS开放源码系统，功能涵盖GIS的基本操作，是学习和掌握GIS原理的非常好源码。deDelphi...

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

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资源描述该系统不依赖任何第三方支持库，分为界面美化模块、资源模块、点模块、线模块、多边形模块、逻辑处理模块、操作基类模块等模块，该资源包含编译好的可运行库和未编译源码及源码编译详细说明。对基于vc开发地理信息系统有较好的知道作用。

首先得安装MapX控件，并在VC源文件中引用CMapX的头文件，能够实现放大，缩小，添加图层数据，进行图层的管理-first be installed MapX, and the VC source quoted CMapX the first document to achieve zoom in and out, add layers of data, the management layer

用vc开发gis程序的代码，电子书可以在网上下载，希望大家多贡献多交流-with vc development gis procedure code, e-books can be downloaded from the Internet, we hope that the contribution to more exchanges

第六个RAR MAPGIS 二次开发教程共6个RAR这是其中的第六个-RAR MAPGIS sixth secondary development of a total of 6 RAR Guide This is one of the sixth

一本关于GIS开发的书籍，撰写明细，对于初步了解GIS开发者有启迪作用-one on the development of the GIS books, writing detailed, for a preliminary understanding of GIS developers have inspirations

shp演示程序 主要改正了使用点线符号（PointLineSymbol）绘制时的死机问题，并调整了几处不正确的bitmap用法。此外增加了小工具shp2esd，用来批量转换shapefile为esd文件。 把这几个目录覆盖掉1.0版的同名目录（先下载easymap1.0），重新编译就可以使用了。 -shp demo program to correct the use of the main points and lines symbols (PointLineSymbol) drawn at the time of death, and adjust the number of incorrect usage bitmap. In addition an increase of small tools shp2esd, used for bulk document conversion shapefile for esd. Several out this directory cover version 1.0 of the same name directory (first download easymap1.0), the compiler can re-use.

基于vc60的MapX开发源码 -VC60-based source of MapX Development

北京09年最新矢量地图(MapInfo格式)-Beijing vector maps like map (MapInfo format)