这是一个有关开发地理信息系统的基础PPT教程，里面内容详尽，而且有对开发地理信息系统需要的软件做以详细介绍，并且主要对MAPINFO做了重点介绍-This is a geographic information system on the basis of developing PPT tutorial, which detailed, but also the development of geographical information systems software needed to do to detail, and made a major highlight of MAPINFO