five-color-map

Color a GeoJSON FeatureCollection so that bordering areas never have the same fill. Five colors are all you'll need.

example

install

install with npm:

$ npm install --save five-color-map

command line

install with npm:

$ npm install -g five-color-map

then

$ fivecolormap data.geojson > colored-data.geojson

usage

var fiveColorMap = require('five-color-map');
var coloredGeoJSON = fiveColorMap(geojson);

Each feature in coloredGeoJSON.features now has a property fill with one of five values:

caveat

At least one of your features must have less than 5 neighbors with adjacent sides. This won't work with a map of hexagons.