title: Unknown type of value in 0,0 while using Google Visuilation Charts
body: <p>I am trying to display <strong>OHLC</strong> values in Google Visualization candle Stick charts and this is my code</p>
  
  <pre><code>var data_value = [
      {
          "date": "2011-08-01",
          "open": "136.65",
          "high": "136.96",
          "low": "134.15",
          "close": "136.49"
      },
      {
          "date": "2011-08-02",
          "open": "135.26",
          "high": "135.95",
          "low": "131.50",
          "close": "131.85"
      },
      {
          "date": "2011-08-05",
          "open": "132.90",
          "high": "135.27",
          "low": "128.30",
          "close": "135.25"
      }
  ];
  
   google.setOnLoadCallback(drawChart);
    function drawChart() {
      var data = google.visualization.arrayToDataTable([
       data_value
      ], true);
  
      var options = {
        legend:'none'
      };
  
      var chart = new google.visualization.CandlestickChart(document.getElementById('chart_div'));
  
      chart.draw(data, options);
    }
  </code></pre>
  
  <p>I am trying to draw Candlestick Charts using Google Charting API .</p>
  
  <p>I have got OHLC data in an array format as shown </p>
  
  <p>But when i am trying to draw the chart , i am getting the  following exception in browser console </p>
  
  <p><strong>Unknown type of value in 0,0</strong></p>
  
  <p>Could you please let me know how to resolve this issue ??</p>
  
  <p>and this is my fiddle </p>
  
  <p><a href="http://jsfiddle.net/8gcr0xe9/4/" rel="nofollow">http://jsfiddle.net/8gcr0xe9/4/</a></p>