Cluster

cls.js

var positions = [];
$('.stone.t5').each(function() {
    if(parseFloat($(this).css('left').replace('px','')) != 0 ) positions.push([
	   parseFloat($(this).css('left').replace('px','')),
	   parseFloat($(this).css('top').replace('px',''))
	]);
});
copy(JSON.stringify(positions))

//NODE
const kmeans = require('node-kmeans');
kmeans.clusterize(points, {k: 30}, (err,res) => {
  if (err) console.error(err);
  clusters = res;
});
//Copy Clusters to console
$('.stone').hide();

for(var i = 0; i < clusters.length; i++){
    var pt = clusters[i];
    var newElem = $('<div class="marker t3 stone" style="left: '+pt.centroid[0]+'; top: '+pt.centroid[1]+';" data-markertype="stone" data-markertier="3">'+pt.cluster.length+'</div>');
    $("#markers").append(newElem);
}

gistfile1.txt

a