不同图式间CASS地形图自动缩编的实现

摘要

In this paper, the author develops CASS software secondarily using AutoLISP, elaborates automatic downsizing of surveying and mapping graph from large scale to small and medium scale between different schemas. The author also chooses surveying and mapping graph through the classification function of AutoLISP, executes symbol conversion of different coding according to CASS software in order to realize the function of scale conversion.%应用AutoLISP对CASS软件进行二次开发,就实现采用不同图式的地形图从大比例尺到中小比例尺的自动缩编进行了阐述.通过AutoLISP的分类选取功能对地形图分别进行选择,再依据CASS软件对不同符号的编码进行符号转换,实现地形图的比例尺变换功能.