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.
토론
2015년 1월 22일 23:39에 robert님의 의견
Ew.
2015년 1월 23일 11:42에 Linhares님의 의견
I think it is because they mapped all the roads and then moved to the details of the country.
2015년 1월 23일 18:27에 okilimu님의 의견
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.
2015년 1월 27일 08:22에 malenki님의 의견
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.
2015년 1월 27일 16:00에 joost schouppe님의 의견
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.
2015년 1월 27일 21:00에 pnorman님의 의견
When did you ship Eric off to North Korea? ;)
2015년 1월 28일 01:57에 lxbarth님의 의견
Haha, yeah, bad photoshopping :)