论文部分内容阅读
为什么国民经济信息的80%都构建在GIS上? 为什么CIS是各行各业信息化的关键? 为什么GIS在国外已形成几十亿美元的产业? 为什么GIS是IT厂商今年的商机所在? 地理信息系统(GIS)是近十几年来发展起来的一门综合应用系统,它能把各种信息同地理位置和有关的视图结合起来,并把地理学、几何学、计算机科学及各种应用对象,CAD技术、遥感、GPS技术、Internet、多媒体技术及虚拟现实技术等融为一体,利用计算机图形与数据库技术采集、存储、编辑、显示、转换、分析和输出地理图形及其属性数据。这样,就可根据用户需要将这些信息图文并茂地输送给用户,便于分析及
Why 80% of national economic information is built on GIS? Why CIS is the key to informatization in all walks of life? Why GIS has formed a multi-billion-dollar industry in foreign countries? Why GIS is the business opportunity for IT vendors this year? Geographic information system (GIS) is a comprehensive application system that has been developed in the last decade or more. It can combine various kinds of information with geographical locations and related views, and put geography, geometry, computer science and various application objects, CAD. Technology, remote sensing, GPS technology, Internet, multimedia technology and virtual reality technology are integrated into one, using computer graphics and database technology to collect, store, edit, display, convert, analyze, and output geographic graphics and their attribute data. In this way, the information can be transmitted to the user graphically according to the user’s needs for analysis and