Saturday, 25 June 2016

Convert GeoJSON to TopoJSON



How do you convert GeoJSON data to TopoJSON?


Why


Topojson files are often smaller than geojson and the conversion allows you to incrementally simplify a dataset, if you wish.



Answer




Glad you asked, oh handsome OP.


Install topojson


From the command line (Mac OSX 10.8, assumes homebrew installed):


brew install node.js
npm install -g topojson

Convert The Data


topojson -o output.json input.json

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