Geo-spatial Information Science

, Volume 13, Issue 4, pp 275–284 | Cite as

Geo-scape, a granularity depended spatialization tool for visualizing multidimensional data sets

  • Kontaxaki Sofia
  • Kokla Margarita
  • Kavouras Marinos
Article
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Abstract

Recently, the expertise accumulated in the field of geovisualization has found application in the visualization of abstract multidimensional data, on the basis of methods called spatialization methods. Spatialization methods aim at visualizing multidimensional data into low-dimensional representational spaces by making use of spatial metaphors and applying dimension reduction techniques. Spatial metaphors are able to provide a metaphoric framework for the visualization of information at different levels of granularity. The present paper makes an investigation on how the issue of granularity is handled in the context of representative examples of spatialization methods. Furthermore, this paper introduces the prototyping tool Geo-Scape, which provides an interactive spatialization environment for representing and exploring multidimensional data at different levels of granularity, by making use of a kernel density estimation technique and on the landscape “smoothness” metaphor. A demonstration scenario is presented next to show how Geo-Scape helps to discover knowledge into a large set of data, by grouping them into meaningful clusters on the basis of a similarity measure and organizing them at different levels of granularity.

Keywords

multidimensional data spatial metaphors spatialization graphical interface kernel density estimation 

CLC number

P208 

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Copyright information

© Wuhan University and Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Kontaxaki Sofia
    • 1
  • Kokla Margarita
    • 1
  • Kavouras Marinos
    • 1
  1. 1.School of Rural and Surveying EngineeringNational Technical University of AthensAthensGreece

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