地球两点距离根据经纬度计算两点间的距离。delphi程序

信息共享：建成体系完整、互联互通的电子政务网络系统和国土资源政务系统共建共享的信息资源库； 　　无缝集成：标准化OA、MIS和GIS的有机集成； 　　B/S结构：实现远程办公办文、远程带图作业，维护简单、安装方便 　　信息发布：通过WEBGIS在互联网上图文并茂的发布土地出让、转让，土地拍卖，土地登记、用地手续、矿产手续等各类信息。 　　二次开发：以平台为基础建立的各类应用，可以方便的进行二次开发，满足业务的各种变化需要。-information sharing : to build a complete system, interoperable e-government network systems and land resources Administrative System Sharing of information resources library; Seamless integration : standardization OA, MIS and the organic integration of GIS; B/S : remote-office run, remote operations with map and maintaining a simple, easy installation information dissemination : WEBGIS on the Internet to browse through the release of land sales and transfers, land auctions, land registration, land clearance, mineral procedures of all types of information. Second development : based platform for a variety of applications, to facilitate the conduct of secondary development to meet the business needs of the changes.

VB6.0+MAPX

实现自定义GIS图层中图标的显示。 可以指定任意的ICON，BMP文件。-realize definition of GIS layers which show the icon. Can specify arbitrary ICON, a BMP file.

mapgis二次开发dll函数，vc++6.0制作-mapgis secondary development dll function, the production of 6.0 vc

一个等值线控件可以绘等高线counter-a contour controls can be drawn contours counter

visual basic +mapobject 编写的索引图和放大窗口代码_VB-visual basic mapobject prepared by the index map and enlarge the window code _VB

基于MO进行多边形的编辑，如添加节点，删除节点，移动节点。等等。-MO for polygon-based editors, such as adding a node, delete node, the mobile node. And so on.

custom map with arcgis server 9.2

你可以在你的GIS(地图信息系统)中使用这些源程序，因为它演示了在地图上的图钉效果，运行这个程序你可以在View中移动一些图标(286KB)-you can in your GIS (Map Information Systems), the use of these sources, as it demonstrated on the maps pushpin results, run this procedure you can View Mobile some icon (286KB)

采用ArcGIS9.0 中的ArcServer加VB开发的程序。可进行联接、网上信息发布等。- Uses in ArcGIS9.0 ArcServer to add the VB development the procedure. May carry on the joint, the on-line information issue and so on.