土地利用现状图概括中的两类问题探讨

Research of Two Kinds of Problems in Land Use Map Generalization

传统的土地利用现状图概括自动化程度较低,需要大量人工处理,通常借助ArcGIS桌面软件提供的空间处理(Geoprocessing)工具,但对于狭长多边形以及最小锐角检查等地图概括问题,没有提供较好的解决方案。本文正是研究处理狭长多边形以及最小锐角检查的地图概括问题。由实验结果可知,利用ArcGIS Engine对最小锐角和狭长多边形处理避免了人工操作的错误,节约了时间,提高了处理的准确度和可靠性,得到了较好的结果。

The automatic efficiency of traditional land use map generalization is very low and it needs the helps of human resources.The ArcGIS Desktop software provides the spatial data processing tools called Geo-processing.The tools could partially accomplish the assignment of map generalization.But they have not solved the generalization problems concerning processing sharp polygons and the inspections of minimum acute angle.This research is about how to generalize the sharp polygons and inspect minimum acute angle automatically.From the experimental results,the conclusion could be made that using ArcGIS Engine to generalize the sharp polygons and inspect acute angle could not only avoid the errors of manual operation and save the time,but also enhance the accuracy and reliability.The results showed that the methods proposed in this paper can get the best effect.