Find centerpoint of polygon in JavaScript

Question

I have a \"place\" object from Google Maps which has a set of coordinates that represent a bounding box for a given location, say London. Each set of coordinates has a latit

Answer 1

Here is my es6 solution to average an array of latitudes and longitudes. Average is not the exact center point but it gets the job done in my case.

getLatLonCenterFromGeom = (coords) => {
    const arrAvg = arr => arr.reduce((a,b) => a + b, 0) / arr.length;

    const centerLat = arrAvg(coords.map(c=>c.latitude));
    const centerLon = arrAvg(coords.map(c=>c.longitude));

    if (isNaN(centerLat)|| isNaN(centerLon))
        return null;
    else return {latitude: centerLat, longitude:centerLon};
}