【摘要】 为了较好地实现网上土地空间数据共享,提高土地空间数据网上传输速度,该文研究了土地空间数据组织与表达方法,分析了土地空间数据的特点和用户需求,并从数据分层表达和数据格式方面进行研究,通过实验,得出了一套客观的数据。经过对数据及其图件的对比、分析表明应根据用户的需要选择数据存储格式,当用户只浏览图件而不需要交互操作时,尽量采用.jpg格式或.g if格式存储图件;当需要为用户提供交互式操作图件时,可以用M apIn fo的.tab格式或ESR I的.shp格式存储图件。更多还原

【Abstract】 Land spatial data organization and expression method was studied in order to realize the on-line land spatial data shares and enhance the land spatial data on-line transmission speed.The characteristics of the land spatial data and the customer’s need were(analyzed),moreover the data delaminating expression and the data format aspect were studied,through experiment one set of objective data was obtained.After contrasting and analyzing the data and the map,the data storage format according to user’s need should be chosen.When the user only browses the map but does not need alternately to operate it,the.JPG format or the.GIF format is(recommended) to use to store graphic document.When the interactive operation graphic document for the user is needed,the.TAB format of the MapInfo or the.SHP format of the ESRI is recommended to use to store graphic document.更多还原