Geometric Matching of Areas Comparison Measures and Association Links

摘要

Increasingly, GIS user communities are faced with problems in combining data from multiple sources. Current implmentations of GIS overlay simply do not provide the necessary control for combining data required in these complex, heterogeneous environmetns. Areas are merged solely on geometric criteria. In this paper we look at a procedure for analyzing and describing semantic relationships between different areal data sets. thi work links semantic considerations through geometric operators on feature inclusion and proximity. It connects to previous work dealing with the geometric matching of lines, but focuses on semantic issues. Issues in areal geoemtric matching are significantly differnet and therefore require differnet GIS operations. This paper describes a methodology that uses geometric operators to elaborate semantic similarities in different coverages through geometric operations. Implemented through association links and filter operations, these oeprators relate individual polygons from different sourcws. A table contains these assocation links for the filtering operations. We look in this paper at fundamental issues and basic operations for matching areas using geometric measures that address semantic issues.