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都道府県別 人口の推移

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LLastSamurai03
Last edited Jul 8, 2016
Created on Jul 8, 2016

A choropleth map of Japan shows population change over time for each prefecture, with a drop-down menu selecting the census year. The color scale ranges from white to blue, and white circles mark each prefectural capital. The visualization uses D3 v3 with the Mercator projection via `d3.geo.mercator`, `d3.geo.path` to render the TopoJSON map, and `d3.legend.color` for the legend. Population data comes from government statistics, and transitions animate the color changes over two seconds.

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forked from <a href='http://bl.ocks.org/n1n9-jp/'>n1n9-jp</a>'s block: <a href='http://bl.ocks.org/n1n9-jp/e515f3df49957efc8693b746fdaf7bc8'>都道府県別 人口の推移</a>

forked from <a href='http://bl.ocks.org/anonymous/'>anonymous</a>'s block: <a href='http://bl.ocks.org/anonymous/82aa88a4b1990e1cf9d1ae8809a8ba78'>都道府県別 人口の推移</a>

forked from <a href='http://bl.ocks.org/LastSamurai03/'>LastSamurai03</a>'s block: <a href='http://bl.ocks.org/LastSamurai03/e2d04e3cc3c0936822943971e4f07fb5'>都道府県別 人口の推移</a>

forked from <a href='http://bl.ocks.org/LastSamurai03/'>LastSamurai03</a>'s block: <a href='http://bl.ocks.org/LastSamurai03/8507c7422e56631c79f47ce81b7694fb'>都道府県別 人口の推移</a>

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