【摘要】 在地图数字化过程中,经常需要使用一些专门的点、线、面符号来表示特定的地物,而在AutodeskMap的标准符号库中没有这类地图符号.为避免重复繁琐地绘制这些符号实体,在AutodeskMap环境下,依据地图符号的一般特点和编码原则,根据点、线和面符号复杂程度和结构形状的不同,采用定制法、PDB开发方法和ObjectARX二次开发方法,设计并创建了特定地物的地图符号库.更多还原

【Abstract】 In the map-digitizing course,some special point form symbols,line form symbols and face form symbols are used to describe the terrain features.There is,however,no such kind of map symbols database in the Autodesk Map system.In order to avoid drawing these symbols repeatedly,the map symbols database is designed and made under the Autodesk Map environment,according to the general characteristics and the crypto principle of map symbols,based on the differences of complicated degree,structure and shape among point form symbols,line form symbols and face form symbols,with customizing methods,PDB developing methods and Object ARX redeveloping technologies.Practice proves this map symbol database is operated simply,conveniently and can satisfy the need really.更多还原