         .domain(d3.range(dataset.length))    
             .rangeRoundBands([0,height]); 
               
var svg = d3.select("body").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
  .append("g")
    .attr("transform", "translate(" + 0 + "," + margin.top + ")");
    
var rects=svg.selectAll("rect")
	.data(dataset)
	.enter()
	.append("rect")
	.attr({
		x:function(d,i){ return margin.left*3; },
		y:function(d,i){ return yScale(d);