anchor.diff:      high: +d.high
     };
   });
  +
  +d3.select('#display_data').html(rawData);
   
   x.domain(d3.extent(data, function(d) { return d.date; }));
   y.domain([d3.min(data, function(d) { return d.low; }), d3.max(data, function(d) { return d.high; })]);
  
positive.code:     .y0(function(d) { return y(d.low); })
      .y1(function(d) { return y(d.high); });
  
  var svg = d3.select("body").append("svg")
      .attr("width", width + margin.left + margin.right)
      .attr("height", height + margin.top + margin.bottom)
    .append("g")
  
negative.code:   .attr("height", "50");
  
  
  </script>
  
  
  