title: Loading only the last 10 lines from csv file in dygraphs
body: <p>Using the example code from the <a href="http://dygraphs.com/tutorial.html" rel="nofollow">tutorial</a>:</p>
  
  <pre><code>&lt;html&gt;
  &lt;head&gt;
  &lt;script type="text/javascript"
    src="dygraph-combined.js"&gt;&lt;/script&gt;
  &lt;/head&gt;
  &lt;body&gt;
  &lt;div id="graphdiv2"
    style="width:500px; height:300px;"&gt;&lt;/div&gt;
  &lt;script type="text/javascript"&gt;
    g2 = new Dygraph(
      document.getElementById("graphdiv2"),
      "temperatures.csv", // path to CSV file
      {}          // options
    );
  &lt;/script&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>I'd like to load only the last 10 lines from <a href="http://dygraphs.com/temperatures.csv" rel="nofollow">temperatures.csv</a> instead of the whole file. Can I pass an instruction to the dygraphs' csv parser to do this?</p>