Opening historical maps for community mashups - a case study of the NLS Historical Maps API KLOKAN TECHNOLOGIES - Museo 300 KLOKAN TECHNOLOGIES - Museo 500 KLOKAN TECHNOLOGIES - Museo 700 Petr Pridal <email@example.com> Chris Fleet <firstname.lastname@example.org> ICA DigiCartoHeritage, Barcelona, April 2012
Historical Maps API• Target: promote the use of historical maps in online mashups• Encourage people to use the historical maps in their own web and mobile applications• New use cases and community usage• Powerful publishing technology• Released: April 2010: usage, impact http://geo.nls.uk/maps/api/
MapTiler.org Technology MapTiler.com TileServer.com• MapTiler (http://www.maptiler.com/)• Rendering of a seamless maps from large number KLOKAN TECHNOLOGIES - Museo 300 KLOKAN TECHNOLOGIES - Museo Sans 50 of GeoTiffs , complete UK coverage (street level) KLOKAN TECHNOLOGIES - Museo 500 KLOKAN TECHNOLOGIES - Museo Sans 50• Power of MultiCore CPUs / clusters / clouds KLOKAN TECHNOLOGIES - Museo 700 KLOKAN TECHNOLOGIES - Museo Sans 70• Unique and cheap publishing technology: possible multiple servers with failover• Available for other mapping projects / large maps / aerial photos / virtual globes
Choice of MapsOut of copyright / complete UK coverage.1:1 million, Great Britain, 1933Quarter-inch to the mile, Scotland, 1921-1923Quarter-inch to the mile, England and Wales,1919-1921One-inch to the mile, Popular edition, Scotland,1920-1930One-inch to the mile, New Popular edition, Englandand Wales, 1945-1947
GeoreferencingUsed ArcGIS - followed workflow described at:http://geo.nls.uk/urbhist/guides_georeferencingarcgis.html
Impact and statistics• May 2010 to February 2011 (22 months) the API has recorded: • 841,000 visits - up to 1 million people! • 1,462,000 page views• Hundreds of web sites where maps appear• Mobile applications created by 3rd parties• Impact on new communities, OpenStreetMap, ...