@turf/center-mean

What is @turf/center-mean?

@turf/center-mean is a module from the Turf.js library that calculates the mean center of a set of geographical points. This is useful for finding the average location of a group of points, which can be applied in various geospatial analyses.

What are @turf/center-mean's main functionalities?

Calculate Mean Center

This feature calculates the mean center of a set of points. The code sample creates a collection of points and then calculates their mean center using the `turf.centerMean` function.

const turf = require('@turf/turf');

const points = turf.featureCollection([
  turf.point([0, 0]),
  turf.point([10, 10]),
  turf.point([20, 20])
]);

const meanCenter = turf.centerMean(points);
console.log(meanCenter);

Other packages similar to @turf/center-mean

@turf/center

@turf/center calculates the centroid (geometric center) of a set of geographical points. While @turf/center-mean calculates the mean center, which is the average of the coordinates, @turf/center calculates the centroid, which is the center of mass of the shape formed by the points.

geolib

geolib is a library for geospatial calculations. It provides functions to calculate the center of a set of points, distance between points, and more. Compared to @turf/center-mean, geolib offers a broader range of geospatial functions but may not be as specialized in calculating mean centers.

leaflet

Leaflet is a popular library for interactive maps. It provides various utilities for geospatial data, including functions to calculate the center of a set of points. While Leaflet is primarily focused on map rendering and interaction, it also includes some geospatial analysis features similar to @turf/center-mean.

README

@turf/center-mean

centerMean

Takes a Feature or FeatureCollection and returns the mean center. Can be weighted.

Parameters

• geojson GeoJSON GeoJSON to be centered

• options Object Optional parameters (optional, default {})

  • options.properties Object Translate GeoJSON Properties to Point (optional, default {})
  • options.bbox Object Translate GeoJSON BBox to Point (optional, default {})
  • options.id Object Translate GeoJSON Id to Point (optional, default {})
  • options.weight string? the property name used to weight the center

Examples

var features = turf.featureCollection([
  turf.point([-97.522259, 35.4691], {value: 10}),
  turf.point([-97.502754, 35.463455], {value: 3}),
  turf.point([-97.508269, 35.463245], {value: 5})
]);

var options = {weight: "value"}
var mean = turf.centerMean(features, options);

//addToMap
var addToMap = [features, mean]
mean.properties['marker-size'] = 'large';
mean.properties['marker-color'] = '#000';

Returns Feature<Point> a Point feature at the mean center point of all input features

---

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 single module individually:

$ npm install @turf/center-mean

Or install the all-encompassing @turf/turf module that includes all modules as functions:

$ npm install @turf/turf