用LISP语言实现分幅图的自动提取

地图分幅作为地图设计重要方法之一,已被普遍应用于地形图、地图等数据库中,分幅图也是极其重要的数据储存方式。对于大比例尺的地形图来说,分幅处理后得到大量的分幅图,其存储、更新和提取都是个非常重要数据整理环节。本文针对现在绘图软件缺乏分幅图提取功能,借助LISP语言二次开发处理技术,实现从大量的分幅图存储数据中自动提取目标分幅图等功能。

Extract Framing Maps Automaticly with LISP Language

As an important drawing method ,framing has been widely used in topographic map and map database. Therefor,framing maps become a very important way of storaging data. For large scale topographic map,to storage,update and extract the large amout of framing maps after framing process is a very important step of data processing. In this pa-per,due to drawing software lack of extracting function for framing maps,we implement functions of extracting targeted topographic map automaticly from large amount of storaged maps datas with help of LISP language secondary developing and processing technology.