Visual Access to Data Quality in Geographic Information Systems
Publication: Cartographica: The International Journal for Geographic Information and Geovisualization
Volume 30, Number 2-3
Abstract
Abstract
Visualization encompasses the display of quantities or qualities of visible or invisible phenomena through the combined use of points, lines, a coordinate system, numbers, symbols, words, shading, color, and animation. The objectives of visualization are to provoke insights and expand comprehension of information by revealing complex relationships among data. Geographical information is visualized in the form of maps. Recent concern over the accuracy and reliability of spatial information in geographic information systems has raised an interest in applying visualization tools to comprehend and communicate the reliability of GIS information and products. This paper develops design requirements for visualization of spatial data quality based on characterizations of quality, a range of quality assessment tasks, and different contexts under which data quality might be investigated.
Résumé
La visualisation comprend l'affichage de phnomnes quantitatifs ou qualitatifs, visibles ou invisibles, au moyen de l'usage combin de points, de lignes, d'un systme de coordonnes, de nombres, de symboles, de mots, de teintes, de couleurs et d'animation. Les objectifs de la visualisation sont de provoquer la perception et d'tendre la comprhension d'une information en rvlant les relations complexes entre les donnes. L'information gographique est visualise sous forme de cartes. De rcents questionnements propos de la prcision et de la fiabilit de l'information spatiale dans les systmes d'information gographique (SIG) ont soulev un intrªt dans l'application des outils de visualisation pour comprendre et communiquer la fiabilit de l'information et des produits des SIG. Cet article dveloppe les besoins de conception pour visualiser la qualit des donnes spatiales partir de la caractrisation de la qualit, une quantit de t¢ches d'valuation de la qualit et diffrents contextes sous lesquels on peut explorer la qualit des donnes.
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Published In
Cartographica: The International Journal for Geographic Information and Geovisualization
Volume 30 • Number 2-3 • Summer & Autumn 1993
Pages: 37 - 45
History
Published in print: Summer & Autumn 1993
Published online: 12 October 2006
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Cartographica 1993 30:2-3, 37-45
Cartographica 1993 30:2-3, 37-45