This video animation illustrates the rapid improvement of Haïti coverage in Openstreetmap following the January 2010 earthquake. It shows coverage of the entire Haiti/Dominican Republic island, and illustrates the rapid worldwide mobilization of volunteer mappers to assist humanitarian workers on the ground.
The videos are based on the timestamps in GeoFabrik's 20100123 Haïti extract (an element that has been touched several times will only appear the last time it was modified). They are generated with a small Common Lisp program available at http://eric.marsden.free.fr/tmp/osm-history.tgz
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