turf-weighted-centroid

turf weighted centroid module

turf.weighted-centroid(points, weightField)

Calculates a the weighted centroid for all point features in a FeatureCollection and returns a point feature representing the weighted mean center.

Parameters

parameter	type	description
points	FeatureCollection.<Point>	input features
weightField	String	the parameter that contains weight data

Example

var points = {
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "properties": {
          "weight": 0.5
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -71.0121549591422,
          32.4197873440115
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "weight": 0.3
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -78.662109375,
          35.79999392988527
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "weight": 0.15
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -78.90380859375,
          32.58384932565662
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "weight": 0.05
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -74.8854720108211,
          32.58384932565662
        ]
      }
    }
  ]
};

var center = turf.weightedCentroid(
  fc, 'weight');

//=return

Returns Feature.<Point>, point at the weighted centroid