大地坐标转换为球坐标

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

MapX 控件是一个常用的GIS功能组件，而鹰眼图是GIS中一个基本的功能。本文简介了MapX并详细说明在Visual Basic和Visual C++开发环境下利用MapX 控件实现鹰眼图的方法。 -MapX is a commonly used GIS components, and Hawkeye GIS map is a basic function. This paper outlines a detailed description and MapX in Visual Basic and Visual C development environment using MapX achieve Hawkeye map.

OpenGIS协会 OGC 制定的关于地理实体结构、方法的实现标准，这里给出了COM/OLE的实现规范，包括点、线、面、空间参考系统等一系列的实现标准规范，有COM和CORBA两种技术形式。可供开发组件GIS系统或深入学习GIS实体实现的人员参考-OGC OpenGIS Association on the development of the geographical entity structure, methods of achieving the standards, Here is a COM/OLE achieving the standard, including point, line, surface, Spatial Reference System Implementation of a series of standards and norms, COM and CORBA two forms of technology. Components for the development of GIS or GIS-depth study to achieve the entity reference

本软件能快速生成条码，各种黑白相间的一维条码-This software can quickly generate bar code, a variety of black-and-white one-dimensional bar code

Delaunay三角网，及Voronoi三角形生成，实现用户加点，自动生成功能！界面友好！速度稍慢~-Delaunay Triangulation and Voronoi triangle generation, add a little to achieve the user to automatically generate the feature! User-friendly! A slower pace ~

越野小车的驱动源码，希望和大家多多学习-Cross-country car driver source code, hope and everyone to learn more

VB＋MapX 实现图层的下拉功能.如打开中国地图,下拉至四川,再到成都地区地图-VB MapX realize the drop-down feature layers. Such as to open the map of China, the drop-down to Sichuan, Chengdu and then map

基于Java的逻辑回归实现，带有完整测试数据集

资源主要内容为shp格式的中国地图，包含了各省市的界限，以及主要的河流，山脉，终点城市等

在arcgis软件中实现三维的屋顶、三微的房屋等，对arcgis的三维的纹理的开发有很好的启发作用-in arcgis software 3D roof of the three-housing, and so on. arcgis of the three-dimensional texture of the development of good inspiration