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Title
VISUALIZATION AND SPATIAL ANALYSIS WITH QGIS AND GEOSERVER: A CASE STUDY OF GEOGRAPHIC INFORMATION COLLECTED THROUGH CITIZEN-PARTICIPATORY SURVEYS
Abstract
This study aims at visualization and spatial analysis of geographic information, a large amount of information collected by volunteer citizens. The study is based on "Kyo-machiya Community-building Survey," for which the Kyoto City Government, Ritsumeikan University, "machiya-experts," and volunteer citizens worked together from October 2008 to March 2010. A complete enumeration survey of Kyo-machiya--Kyoto's representative architecture of early-modern wooden townhouses, the survey also intends to identify beautiful streetscapes suitable to the historical cityscape.
The survey data contains geographic information of more than 45,000 Kyo-machiya and 1,000 photographs of streetscapes. We are developing a GIS database by using stand-alone web FOSS4G tools so that contents can be widely open to the public and effectively gather responses to the survey results, the responses that eventually lead to the contribution to urban landscape planning policy of Kyoto City.
The database visualizes information of streetscape spots whose information and photographs are linked by QGIS. While overlaying the spots with urban planning maps, one can also analyze their information by using neighborhood statistics. Our visualization reveals that the citizens value streetscape in residential areas, as well as that in sightseeing spots appeared in Flickr and historical heritage conservation areas. Overlaying the citizen-identified streetscape spots with an old map also proves that a lot of them can be also found in the periphery of historical urban centers.
The GIS data used in the stand-alone environment will be available online to the public soon. For this purpose, we use Google Maps as the base maps, because of its capability to distinguish narrow roads and building shapes, with the help of OpenLayers and Geoserver. As a result, QGIS and Geoserver make geographically valuable information available to the public in a more easily understandable form. This hopefully invites responses from people concerned with urban planning of Kyoto City.
Authors
Toshikazu Seto - Ritsumeikan University
Ayako Matsumoto - Ritsumeikan University
Takafusa Iizuka - Ritsumeikan University
Keiji Yano - Ritsumeikan University
