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Mechanical Turk workers in US | by sethoscope
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Mechanical Turk workers in US

Techlist asked over 16,000 Mechinical Turk workers in the US for their location. I made this map using the data (with permission) and Open Street Map tiles (CC-BY-SA) for the background.


I grabbed the data, pulled out the points, discarded everything outside the first 48 states, and ran it through my heatmap script twice, compositing the two images, all with these commands: -v --osm -B 0.3 -p mturkgeo.points -r 25 -z 5 --margin 20 -o layer1.png ; --decay=0.3 -p mturkgeo.points -r 3 -o layer2.png --extent 22.7559206815,-126.342773438,50.2612538276,-65.2587890625 --width 1391 --height 796 ;

composite layer2.png -dissolve 50 layer1.png mturk.png


The map extent and image size in the second command are just copied from the output of the first one. I should really wrap the two-pass method in a script.

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Taken on February 2, 2011