@turf/distance-weight

@turf/distance-weight

pNormDistance

calcualte the Minkowski p-norm distance between two features.

Parameters

• feature1 point feature
• feature2 point feature
• p p-norm 1=<p<=infinity 1: Manhattan distance 2: Euclidean distance

distanceWeight

Parameters

• fc FeatureCollection<any> FeatureCollection.
• options Object? option object.
  • options.threshold number If the distance between neighbor and target features is greater than threshold, the weight of that neighbor is 0. (optional, default 10000)
  • options.p number Minkowski p-norm distance parameter. 1: Manhattan distance. 2: Euclidean distance. 1=<p<=infinity. (optional, default 2)
  • options.binary boolean If true, weight=1 if d <= threshold otherwise weight=0. If false, weight=Math.pow(d, alpha). (optional, default false)
  • options.alpha number distance decay parameter. A big value means the weight decay quickly as distance increases. (optional, default -1)
  • options.standardization boolean row standardization. (optional, default false)

Examples

var bbox = [-65, 40, -63, 42];
var dataset = turf.randomPoint(100, { bbox: bbox });
var result = turf.distanceWeight(dataset);

Returns Array<Array<number>> distance weight matrix.

---

This module is part of the Turfjs project, an open source module collection dedicated to geographic algorithms. It is maintained in the Turfjs/turf repository, where you can create PRs and issues.

Installation

Install this module individually:

$ npm install @turf/distance-weight

Or install the Turf module that includes it as a function:

$ npm install @turf/turf

Changelog

6.5.0

🏅 New Features/Enhancements

• @turf/points-with-polygon Add MultiPoint support (PR https://github.com/Turfjs/turf/pull/2137 - Author @twelch)

🐛 Bug Fixes

• @turf/dissolve Complete rewrite of the dissolve module to resolve many bugs (PR https://github.com/Turfjs/turf/pull/2110 - Author @rowanwins)

• @turf/mask Complete rewrite of the mask module to resolve many bugs (PR https://github.com/Turfjs/turf/pull/2130 - Author @rowanwins)

• @turf/boolean-valid Add missing dependency to (PR https://github.com/Turfjs/turf/pull/2094 - Author @rycgar)

📖 Documentation

• @turf/boolean-overlap Improve clarity (PR https://github.com/Turfjs/turf/pull/2133 - Author @patrickbrett)

🔔 Misc

• Enable TS Strict Mode (PR https://github.com/Turfjs/turf/pull/2126 - Author @mfedderly)