Title :
Querying GIS with animated spatial sketches
Author :
Haarslev, Volker ; Wesse, Michael
Author_Institution :
Dept. of Comput. Sci., Hamburg Univ., Germany
Abstract :
We present the design of the visual query system VISCO that offers a sketch-based query language for defining approximate spatial constellations of objects. VISCO smoothly integrates geometrical and topological querying with deductive spatial reasoning. It is based on a strong physical metaphor visualizing semantics of query elements. Approximate queries rely on combined topological and geometrical constraints enhanced with relaxations and “don´t cares” that are visualized through live animations
Keywords :
computer animation; data visualisation; geographic information systems; graphical user interfaces; query languages; query processing; spatial reasoning; visual databases; visual languages; GIS; VISCO; animated spatial sketches; approximate spatial constellations; deductive spatial reasoning; geographic information system; geometrical querying; graphical interface; semantics; sketch-based query language; topological querying; visual query system; Animation; Database languages; Geographic Information Systems; Information systems; Logic; Nails; Rubber; Spatial databases; Visual databases; Visualization;
Conference_Titel :
Visual Languages, 1997. Proceedings. 1997 IEEE Symposium on
Conference_Location :
Isle of Capri
Print_ISBN :
0-8186-8144-6
DOI :
10.1109/VL.1997.626583
