Geocoding Twitter users – The #SwissGIS map
Recently, I’ve been experimenting with some Twitter-oriented hacks together with my friend Tom. A very preliminary result of these activities is what I call the #SwissGIS map.
Some, just a little, history: Over the last few years, I have been collecting Switzerland-based Twitter users that talk about topics around GIS, cartography, webmapping and geomatics on a list called SwissGIS. Find it at https://twitter.com/rastrau/lists/swissgis, if you are interested in GIS-related news from Switzerland. The list is quite diverse in several respects: for one, it features GIS users, developers, OSMers, cartography specialists and other groups. Given we’re talking of Switzerland it is also multilingual, with English, German and French making up the bulk of tweets.
This time, we went for a more spatial representation of #SwissGIS users. By now, the list features 167 members, more than 100 more than when the above visualisation was made. Click through for the interactive version:
The process for creating this map was as follows: Using the Twitter API, we acquired data on all#SwissGIS members (with public accounts), extracted the profile location (if it was stated by the user), geocoded that information (if possible) and put it on a map with the user’s profile icon.