I’ve made a video showing anonymous edits on Wikipedia as a density map grouped by day.
Direct link to the video on Flickr: http://www.flickr.com/photos/xrm0/3654611676/
Used a 2008 Wikipedia dump (with revisions ranging from 2001-10-02 to 2008-03-14) to extract the information on all the anonymous revisions made. First a Java program (loosely based on MWDumper) extracts all the ips and dates and store them on disk. Then a ruby script using RMagick and geoip_city creates a density map for each day and save each as an image. And finally, the video is created with ffmpeg.
The source code used to create the video is at http://github.com/luisparravicini/wiki-anon-edits/tree/master
- Revisions of registered users are discarded (maybe Poor Man’s CheckUser can be used to translate between users and ip address).
- Use a more recent dump.
- How to make heat maps
- Mouse Coordinates To Lat/Long
- The world map on the video is based on World_Blank_Map_(Mercator_projection).svg