GIS, Maps, Geo and Location Technology by @gletham
From OsGeo… The Open Source Geospatial Foundation, or OSGeo, today announced that the OSGeo Conference committee has released a request for proposal (http://www.osgeo.org/conference/rfp), or RFP, for the hosting of the 2011 conference. Letters of Intent are due April 9th, and the RFP solicitation closes May 21st, 2010.
Showing historic estimates and future projections for cities, urban areas and megacities with more than 750000 inhabitants for 1950-2050. The data has been acquired from UN Population Division and georeferenced. The data is available as spreadsheet/table, maps, for Google Earth, in an animation video and for GIS data download. The data has been retrieved from the UN Population Division publication and web service World Urbanization Prospects, 2007 revision, and georeferenced using a variety of sources.
The database is available for unrestricted download, under the Creative Commons 2.5 attribution license. This gives you the right to reuse and modify the data, as long as Nordpil and the UN Population Division are properly credited. See http://nordpil.com/go/resources/world-database-of-large-cities/
The GeoCommons Maker web service enables users to create maps till their heart is content. Today we had a look around and put together a fun map showing locations of social media checkins using GoWalla and foursquare. Interesting to see on the map where exactly people are checkin in from and which app is popular in particular geographic regions. See the map here
