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Auteur Hui Sun |
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Effectiveness of cartogram for the representation of spatial data / Hui Sun in Cartographic journal (the), vol 47 n° 1 (January 2010)
[article]
Titre : Effectiveness of cartogram for the representation of spatial data Type de document : Article/Communication Auteurs : Hui Sun, Auteur ; Zhilin Li, Auteur Année de publication : 2010 Article en page(s) : pp 12 - 21 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie thématique
[Termes IGN] analyse comparative
[Termes IGN] carte synthétique
[Termes IGN] carte thématique
[Termes IGN] cartogramme
[Termes IGN] cartographie statistique
[Termes IGN] données localisées
[Termes IGN] qualité des données
[Termes IGN] représentation
[Termes IGN] visualisation de donnéesRésumé : (Auteur) Cartogram is a technique for visualisation of the geographical distribution of spatial data. It has two main types, i.e. distance cartogram and area cartogram. Area cartogram is a transformed map in which areas are resized in proportion to an attribute value. A number of techniques have been developed for the generation of area cartograms. Some researchers consider cartogram as a very effective technique for visualisation of spatial data, while others doubt about the effectiveness because of the possible distortion in shape and/or disconnectivity in topology. This study aims to evaluate the effectiveness of area cartogram for visualizing spatial data. In this study, two comparative experiments have been conducted. One is the comparison between thematic maps and cartograms, and the other is the comparison among different types of area cartogram. Two sets of data with different characteristics are used, i.e. 2005 China population data and 1996 US election data. Results show that cartogram is more effective in the representation of the 1996 US election data which provides a qualitative result (i.e. in binary form or nominal data), but thematic map is far more effective in the representation of 2005 China population data which provides a quantitative result (in classes or ordinal data). It is also found that among different types of area cartogram, pseudo-cartogram is the most preferred technique and Darling cartogram is the least preferred one. Copyright Cartographic Journal Numéro de notice : A2010-079 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/000870409X12525737905169 Date de publication en ligne : 07/03/2014 En ligne : https://doi.org/10.1179/000870409X12525737905169 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30275
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