Erich Fisher came up with a new great visualization of web data. The maps highlight where people post geo-tagged photos to Flickr (red) from and geo-tagged tweets to Twitter from (blue), or both (white). (via Information Aesthetics)
What I like particularly about this kind of map is the way it unveils urban hierarchy.
USA
[all images credit: Erich Fisher] (via Information Aesthetics)
Europe
(via Information Aesthetics)
Could it tell us somthing about urban centrality?
NY
Rio de Janeiro
London
São Paulo
check out these other two “old” projects of him: tourists versus locals and the geographical distribution of racial and ethnic divides in cities around the world (originally inspired by Bill Rankin).
