Last year Eric Fischer produced a great map visualising the language communities of Twitter. The map, perhaps unsurprisingly, closely matches the geographic extents of the world’s major linguistic groups. On seeing these broad patterns I wondered how well they applied London- a great international city. The graphic above shows (and here for non-zoom version) the spatial distribution of about 3.3 million geo-located tweets (based on GPS) coloured by the language detected using Google’s translation tools.
Even though the map contains over 3 million tweets it is still a fairly selective sample of Londoners- they only include people who have a good location (through GPS) and those who are connected to the internet.