https://gist.github.com/joates/6584908 example of how to copy functions function linspace(a,b,n) {
	if(typeof n === "undefined") n = Math.max(Math.round(b-a)+1,1);
	if(n<2) { return n===1?[a]:[]; }
	var i,ret = Array(n);
	n--;
	for(i=n;i>=0;i--) { ret[i] = (i*b+(n-i)*a)/n; }
	return ret;
	}