OpenStreetMap
The OpenStreetMap contributions in Japan from 2007 to 2014 show a fascinating pattern. Why do you think they look this way?
OpenStreetMap contributions in Japan from 2007 to 2014 by Eric Fischer. 2007: blue, 2008: purple, 2010: red, 2012: orange, 2014: yellow.
Discussion
ߡߙߌߣߊ߲ ߞߊ߬ ߝߘߊ߫ robert ߟߊ߫ 22 January 2015 at 23:39 ߘߐ߫
Ew.
ߡߙߌߣߊ߲ ߞߊ߬ ߝߘߊ߫ Linhares ߟߊ߫ 23 January 2015 at 11:42 ߘߐ߫
I think it is because they mapped all the roads and then moved to the details of the country.
ߡߙߌߣߊ߲ ߞߊ߬ ߝߘߊ߫ okilimu ߟߊ߫ 23 January 2015 at 18:27 ߘߐ߫
They made a lot of imports, too. Before 2011, they imported forests. In 2011, after the tsunami and fukushima desaster, Yahoo Japan gave OSM the ability to import a streets in Japan. But the japanese OSM Community is very active, too.
ߡߙߌߣߊ߲ ߞߊ߬ ߝߘߊ߫ malenki ߟߊ߫ 27 January 2015 at 08:22 ߘߐ߫
Like a lot of things the visualized data of Japan may look beautiful – but a close look makes you shiver. I am thinking of the imports I had a look at and for which I assume the most errors still won’t be fixed.
ߡߙߌߣߊ߲ ߞߊ߬ ߝߘߊ߫ joost schouppe ߟߊ߫ 27 January 2015 at 16:00 ߘߐ߫
Because of population density? This is what Japan looks like at night, a good proxy for population density within a country (actually population density * prosperity * measures to decrease light polution). Striking similarity, no. It could be interesting to overlay both images and look for outliers. A bit like I believe members of your team did some time back, but using image complexity in stead of population density as a predictor of expected data density.
ߡߙߌߣߊ߲ ߞߊ߬ ߝߘߊ߫ pnorman ߟߊ߫ 27 January 2015 at 21:00 ߘߐ߫
When did you ship Eric off to North Korea? ;)
ߡߙߌߣߊ߲ ߞߊ߬ ߝߘߊ߫ lxbarth ߟߊ߫ 28 January 2015 at 01:57 ߘߐ߫
Haha, yeah, bad photoshopping :)