Import3DAscii. Inducts the three dimensional data to the text documents, facilit...

一点到一直线的距离计算，各种情况都考虑进去了--GIS-1:00 of the distance has been calculated, all the circumstances are taken into account-- GIS

web gis MAPJ VISUAL BASIC

应用背景在物力大地测量学中，重力异常的计算，需要测量计算点的重力值和计算测量点的正常重力。计算正常重力时，需要已知计算点大地坐标，即经度、纬度和大地高，如果采用GPS采集数据，那么获得的大地坐标的参考椭球是WGS84。关键技术此程序，采用WGS84参考椭球参数，因此输入数据为WGS84大地坐标，顺序为，纬度、经度、大地高。输入文件为，Input.dat。输出文件为，output.txt。计算结果为，椭球面以上高程为h处的正常重力。如果将大地高设为0，那么计算结果为此点处参考椭球面上的正常重力。

简化DXUT框架,保存了基本的功能,设备创建,回调函数注册,适合新手学习-DXUT simplified framework for the preservation of the basic functionality, equipment to create, register a callback function, suitable for novice learning

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

用VB实现的电子地图定位原代码用VB实现的电子地图定位原代码-Using VB to achieve positioning of the electronic map with the original VB code to achieve the original positioning of the electronic map code

目前支持autocad中DWG文件读写的源码除了用python写的phythonCAD，恐怕就只剩这个了。可是为什么该站要限定java和C才开通呢，其实有一些其他语言的源码也很经典啊-Currently supports autocad in the source code to read and write DWG files besides using python write phythonCAD, I am afraid the only place this has been. But why the station should be limited to java and C only to open it, in fact, have a number of other languages source code is also very classic ah

数字地理信息系统mapinfo应用大全源代码-Digital Geographic Information System MapInfo application source code Daquan

通过Mif文件（mapinfo的文件格式）在自己的地图窗口中创建点状对象-through Mif (MapInfo file format) in the Map window to create point target

实现了shape数据的加载和GIS基本功能，以及图层管理功能（图层的上下移动、删除等）-realized the shape of data loading and basic GIS functions, and the layer management functions (the next layer of Mobile, delete, etc.)