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Generalization Operations and Supporting Structures
Using Spline Functions to Represent Distributed Attributes
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abstract accuracy algebraic algorithm analysis applications attribute boundary set cardinal directions cartographic cartographic symbolization cell cell complex Chrisman clustering combination complex Computer concepts coordinates critical points cyclic ordering data models data structure database defined Delaunay triangulation deletion derived described direction display distance domain edge Egenhofer entity error Eulerian tour example Figure functions Geographic Information Systems geometric Goodchild graph graphic hierarchical implementation insertion International intersection knowledge representation knowledge representation scheme language layer metaphor methods n-simplex node object-oriented overlay operations paper parameter plane polygon polyline problem procedure Proceedings processor projection properties quadtree query R-tree Reactive-tree region represent retrieval scale selection space spatial data spatial indexing spatial objects specific spline surface technique tessellations topological map topological relationships tree tree-ordering triangles tuple UGIX user interface variables vector vertex vertices viewshed visual