create a nvd3 chart

nvd3_chart.js

data = function() {
  var sin = [],
      cos = [];
  for (var i = 0; i < 100; i++) {
    sin.push({
      x: i, y: Math.sin(i/10)}
            );
    cos.push({
      x: i, y: .5 * Math.cos(i/10)}
            );
  }
  return [
    {
      values: sin,
      key: 'Sine Wave',
      color: '#ff7f0e'
    }
    ,
    {
      values: cos,
      key: 'Cosine Wave',
      color: '#2ca02c'
    }
  ];
}
nv.addGraph(function() {
  var chart = nv.models.lineChart()
  .useInteractiveGuideline(true)
  ;
  chart.xAxis
    .axisLabel('Time (ms)')
    .tickFormat(d3.format(',r'))
  ;
  chart.yAxis
    .axisLabel('Volt (v)')
    .tickFormat(d3.format('.02f'))
  ;
  d3.select('#chart svg')
    .datum(data())
    .transition().duration(500)
    .call(chart)
  ;
  nv.utils.windowResize(chart.update);
  return chart;
}
           );