OSMatrix— visualizing spatio-temporal characteristics of OpenStreetMap
OSMatrix is a web-based application to visualize characteristics of OpenStreetMap, which are usually not displayed in cartographic representations of the data. The characteristics include information on the topicality of data, user contributions and the presence (or absence) of certain feature types.
OSMatrix is based on an idea of Alexander Zipf has been brought to life by Lukas Loos and Oliver Roick at GIScience Research Group at Heidelberg University.
Roick, O.; Loos, L.; Zipf, A. (2012): A Technical Framework for Visualizing Spatio-temporal Quality Metrics of Volunteered Geographic Information. Geoinformatik 2012, Braunschweig, March 2012.
Roick, O.; Hagenauer, J.; Zipf, A. (2011): OSMatrix - Grid based analysis and visualization of OpenStreetMap. State of the Map EU. Wien, July 2011.