The Humanitarian OpenStreetMap Team’s (HOT) response to Haiti remains one of the most remarkable examples of what’s possible when volunteers, open source software and open data intersect. When the 7.0 magnitude earthquake struck on January 12th, 2010, the Google Map of downtown Port-au-Prince was simply too incomplete to be used for humanitarian response. Within days, however, several hundred volunteers from the OpenStreetMap (OSM) commu-nity used satellite imagery to trace roads, shelters, and other features to create the most detailed map of Haiti ever created.
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