A Tool Performing Topological Correction In GIS

The aim of this research concerns the construction,representation and generalization, in the GIS, of different map scales by standard procedure,preserving the correspondences and the data structures. This issue involves many different types of data structures and data manipulations. We define the data models suitable to describe the physical reality in the GIS (the topological and the vector model) and the spatial relationships to perform a correct use of a spatial database. The topic of this paper is to show how topological relations can be used to detect and to correct errors in GIS data sets. In the second part, in fact, we take into account the procedure to correct the topological inconsistency in the maps at different scale, moreover after the map generalization. To make more effectively the research we implemented a new tool in a commercial software, called Topology, applying to different kind of spatial databases.