DLG空间要素网格综合法研究

通过将网格法用于DLG空间要素综合的数学计算过程的研究,提出DLG要素综合的一种新方法——网格综合法。通过对点、线、面要素网格综合法的系统分析,重点论述线、面典型空间要素的网格综合法的理论和方法,并提出数学模型,为空间要素自动地综合提出一种有效的技术途径,这在各级地理信息空间数据采集和建库中具有重要意义。

Research on Grid Generalization Method of DLG Spatial Feature

Based on grid theory,a new generalization method of DLG spatial features is proposed by the authors-the grid generalization method.At the first,the paper introduces the method to generalize the spatial features such as point,line,polygon feature of grid generatingon,discusses the approach of line and polygon generating in detail.Then the paper presents a mathematical model of the grid generalization method.According to this model,spatial features can be generalized automatically and efficiently by computor.This study can be applied to gathering aquiring spatial data and building GIS database.