基于AutoCAD中实现空间基础数据符号化

The symbolization of spatial topographic data based on AutoCAD

基于AutoCAD软件平台,阐述了点、线及面等类型基础地形图符号的设计与创建过程。在对空间数据进行预处理和数据转换的基础之上,根据地物编码表与符号编号之间的对照关系,建立了空间基础数据符号库。最后,运用Autolisp二次开发语言设计了空间基础数据的符号化步骤,完成了点、线及面等地理要素的符号化表现,并实现了地形图图外整饰内容的合理配置。

Based on the lustrates the design and AutoCAD platform, the paper il- making three types including point, line, processing and transformation of of symbols referred to and area. After the pre- the spatial topographic data, the symbol library depended on the relationship be- tween feature code and symbol index has been created. Using the in-line programming language Autolisp of Au- toCAD, one applicable flowchart for features symboliza- tion has been designed. Following this chart, the repre- sentation of spatial topographic data which involves fea- tures symbolization, marginal representation and outside features deployment in have been implemented.