Abstract
This paper represents the first effort to apply direct-manipulation (VIS) techniques to spatial data exploration providing mechanisms for visually querying as well as browsing spatial data and for reviewing the visual results for trend discovery. We present a visual query language (SVIQUEL) which allows us to specify the relative spatial position (both topology and direction) between objects using direct manipulation of spatial query filters, called S-sliders. The S-sliders for the selection of precise numeric ranges for query dimensions are complimented by Active- Picture- for- Querying (APIQ), a qualitative directmanipulation query paradigm. SVIQUEL thus supports spatial browsing and spatial trend discovery with no particular query in mind. The tight coupling between the quantitative S-sliders and qualitative APIQ allows the users to work either qualitatively or quantitatively depending on his/her particular needs and freely switch between the two while working in a continuous data exploration mode.
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Kaushik, S., Rundensteiner, E.A. (1998). SVIQUEL: A spatial visual query and exploration language. In: Quirchmayr, G., Schweighofer, E., Bench-Capon, T.J. (eds) Database and Expert Systems Applications. DEXA 1998. Lecture Notes in Computer Science, vol 1460. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0054490
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DOI: https://doi.org/10.1007/BFb0054490
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