turf-quantile

turf quantile module

turf.quantile(input, field, percentiles)

Takes a FeatureCollection, a property name, and a set of percentiles and returns a quantile array.

Parameters

| parameter | type | description | | ------------- | ----------------- | ------------------------------------------------------------- | | input | FeatureCollection | a FeatureCollection of any type | | field | String | the property on which to retrieve quantile values | | percentiles | Array. | an Array of percentiles on which to calculate quantile values |

Example

var points = turf.featurecollection([
  turf.point([5,5], {population: 5}),
  turf.point([1,3], {population: 40}),
  turf.point([14,2], {population: 80}),
  turf.point([13,1], {population: 90}),
  turf.point([19,7], {population: 100})
]);

var breaks = turf.quantile(
  points, 'population', [25, 50, 75, 99]);

//=breaks

Installation

Requires nodejs.

$ npm install turf-quantile

Tests

$ npm test