利用MAPX实现的电子地图显示、查询及定位等功能，本源码为DLL，不包含MAPX控件。...

地理信息系统很好的c#编程，学习的好资料~适合初学者使用。-Geographic Information System a good c# programming, learning good information ~ suitable for beginners to use.

VB6.0+MAPX开发原理-VB6.0 Connection Principle Development

色调均匀，暗红或黑色，分布于河岸处，形状规则。 红或深绿色，有纹理结构和明显的灌渠，形状规则，分布于河谷、河流两岸冲积平原。 -uniform colors, or black dishes, distributed in the bank, the shape of the rules. Red or dark green, texture and structure of the irrigation channels clear shapes and distribution in the valley, rivers alluvial plain.

这是关于二维波动方程正演的一款软件！大家可以交流讨论下！此程序可以实现地震波场的正演模拟计算，所利用的原理是基于波动方程的 请点击左侧文件开始预览 ！预览只提供20%的代码片段，完整代码需下载后查看 加载中 侵权举报

VB版的MOVIEW，包括了VB+MO的一切基本功能：地图的放大、缩小、地址匹配，空间查询...（MapObjects是一个数字地图相关的控件组，程序需安装MO才能运行，供GIS专业用）推荐-MOVIEW version of VB, VB MO include all basic functions : the map to zoom, address matching, spatial query ... (MapObjects is a digital map of the control group, MO installation process required to run for professional use GIS) Suggest

常用地图投影转换公式。包括高斯投影、墨卡托投影、通用墨卡托投影、兰勃特投影等投影转换的详细公式。-The conversion formula commonly used map projection. Including the Gaussian projection, Mercator projection, Mercator projection GM, Lambert projection, such as the detailed formula for projection conversion.

一个基于ArcEngine开发的代码框架， 其中的代码具有很高的参考价值， 能够实现GIS基本功能和空间查询-ArcEngine developed a code based on the framework, in which the code has high reference value, to realize the basic functions of GIS and spatial query

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

TinToPoint。 将不规则三角网转换成点坐标。实现栅格到矢量的转换。-TinToPoint. The irregular triangular net will transform coordinates. Realization grid to vector transformation.

WINDOW GAME DEMO CODE