株価チャートなどに使うグラフ (実験)
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<html>
  <head>
    <script type="text/javascript" src="https://www.google.com/jsapi"></script>
    <script type="text/javascript">
      google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
  function drawChart() {
    var data = google.visualization.arrayToDataTable([
      ['Mon', 20, 28, 38, 45],
      ['Tue', 31, 38, 55, 66],
      ['Wed', 50, 55, 77, 80],
      ['Thu', 77, 77, 66, 50],
      ['Fri', 68, 66, 22, 15]
      // Treat first row as data as well.
    ], true);

    var options = {
      legend:'none'
    };

    var chart = new google.visualization.CandlestickChart(document.getElementById('chart_div'));

    chart.draw(data, options);
  }
    </script>
  </head>
  <body>
    <div id="chart_div" style="width: 600px; height: 350px;"></div>
  </body>
</html>
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