five-color-map

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

example

!USA Congressional Districts

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

` javascript
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:

!the five colors used by this package

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.