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Geodesy and Cartography

The Journal of Committee on Geodesy of Polish Academy of Sciences

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2300-2581
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The geovisualisation window of the temporal and spatial variability for Volunteered Geographic Information activities

Beata Medynska-Gulij
  • Corresponding author
  • Department of Cartography and Geomatics, Adam Mickiewicz University Poznan, Collegium Geographicum, 27 Dziegielowa St., 61-680 Poznan, Poland
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  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Miłosz Myszczuk
  • Department of Cartography and Geomatics, Adam Mickiewicz University Poznan, Collegium Geographicum, 27 Dziegielowa St., 61-680 Poznan, Poland
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2012-11-20 | DOI: https://doi.org/10.2478/v10277-012-0020-y

Abstract

This study presents an attempt to design geographical visualisation tools that allow to tackle the immensity of spatial data provided by Volunteered Geographic Information (VGI), both in terms of temporal and spatial aspects. In accordance with the assumptions made at the conceptual stage, the final action was the implementation of the window entitled ‘Geovisualisation of the Panoramio.com Activities in District of Poznan 2011’ into the web browser. The concept has been based on a division of the geovisualisation window into three panels, of which the most important - in order to capture spatial variability - have statistical maps at the general level (dot map and choropleth map), while at the detailed level - a dot map on a topographic reference map or tourist map. For two ranges, temporal variability is presented by graphs, while a review of attributes of individual activities of the social website in question is set forward in the table panel. The element that visually interlinks all of the panels is the emphasised individual activity.

Streszczenie

Problemem podjetym w tych badaniach stało sie wykorzystanie metod z nurtu geograficznej wizualizacji do wskazania cech fenomenu VGI w zakresie zmiennosci czasowo-przestrzennej. Zgodnie z załozeniami poczynionymi w etapie koncepcyjnym finalnym działaniem stało sie zaimplementowanie do przegladarki internetowej okna pod tytułem: ”Geowizualizacja aktywnosci społecznosci Panoramio.com w powiecie poznanskim w 2011 roku”. Koncepcja została oparta na podziale okna geowizualizacji na trzy panele, z których najwazniejsze znaczenie dla uchwycenia zmiennosci przestrzennej na poziomie ogólnym ma kartogram, natomiast na poziomie szczegółowym mapa kropkowa wyswietlana na podkładzie mapy topograficznej lub turystycznej. Zmiennosc czasowa w dwóch zakresach prezentuja wykresy, a przeglad atrybutów poszczególnych aktywnosci prezentowanego portalu społecznosciowego zapewnia tabela. Elementem spajajacym wizualnie wszystkie panele jest wyeksponowana graficznie pojedyncza aktywnosc. Przetwarzanie danych odbyło sie w srodowisku open source, a technologia funkcjonowania aplikacji okna geowizualizacji bazowała na zastosowaniu asynchronicznych zapytan do serwera WWW oraz serwera baz danych co zapewnia sprawne „odswiezanie” poszczególnych paneli.

Keywords : Geovisualisation window; Volunteered Geographic Information; visualising times-spatial data; open sources; web technology

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About the article

Published Online: 2012-11-20

Published in Print: 2012-11-01


Citation Information: Geodesy and Cartography, ISSN (Online) , ISSN (Print) 2080-6736, DOI: https://doi.org/10.2478/v10277-012-0020-y.

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