*** Presented at State of the Map 2013, by David Evans ***
*** For more info including slides, where available, see lanyrd.com/2013/sotm/scphdh/
*** Full schedule also available at wiki.openstreetmap.org/wiki/State_Of_The_Map_2013
The Open Historical Map is billed as "The world's most out of date map". Its complementary approach uses OSM tools to focus on features that have disappeared, changed shape or purpose. Because of scale and relevancy issues the Open Historical Map uses its own database instance that imports some of the features of OSM. Editing of the map by users is encouraged, though most of the data comes from automated imports from other historical projects that contribute mapping information. David will review how the Street and Historical maps can be used together and how problems of time and accuracy in the historical map are handled.