turf-median

turf median module

turf.median(polygons, points, inField, outField)

Takes a set of polygons, a set of points, and tag polygons with the sum of point property values contained within.

Parameters

| parameter | type | description | | ---------- | ----------------- | --------------------------------------- | | polygons | FeatureCollection | a FeatureCollection of Polygon features | | points | FeatureCollection | a FeatureCollection of Point features | | inField | string | the field in input data to analyze | | outField | string | the field in which to store results |

Example

var polygons = turf.featurecollection([
  turf.polygon([[[0,0],[10,0],[10,10],[0,10],[0,0]]]),
  turf.polygon([[[10,0],[20,10],[20,20], [20,0]]])]);
var points = turf.featurecollection([
  turf.point([5,5], {population: 200}),
  turf.point([1,3], {population: 600}),
  turf.point([14,2], {population: 100}),
  turf.point([13,1], {population: 200}),
  turf.point([19,7], {population: 300})]);
var aggregated = turf.median(polygons, points, 'population', 'median');
//=polygons
//=points
//=aggregated

Installation

Requires nodejs.

$ npm install turf-median

Tests

$ npm test