if(!d3.geo2square) d3.geo2square = function(coordinates, width, height) {
    var centroid =d3.polygonCentroid(coordinates)
        
    width = (width) ? width : 0 ;
    height = (height) ? height : 0 ;

    var p = []
    var i = 0
    var length = coordinates.length
    var qtr = ~~(length/4)

      
    var nScale = d3.scaleLinear().domain([0, qtr]).range([0, width])
    var sScale = d3.scaleLinear().domain([0, qtr]).range([width, 0])
    var wScale = d3.scaleLinear().domain([0, qtr]).range([0, height])
    var eScale = d3.scaleLinear().domain([0, qtr]).range([height, 0])
      
	while (i < length) {
        if (i <= qtr){
            p.push([ centroid[0]+nScale(i), centroid[1] ])
        }
        else if (i <= qtr*2){
            p.push([ centroid[0]+width, centroid[1] + wScale(i-qtr) ])
        }
        else if (i <= qtr*3){
            p.push([ centroid[0]+sScale(i-qtr*2), centroid[1]+height ])
        }
        else if (i <= qtr*4){
            p.push([ centroid[0], centroid[1]+eScale(i-qtr*3) ])
        }
        i++
    }
    
	return p

};