title: d3 stock value line graph: can't draw the line
body: <p>I'm working on a line graph with d3 that will represent the value of the Yahoo stock action. </p>
  
  <p>I put my code in this <a href="http://jsfiddle.net/prmne/" rel="nofollow">JSFiddle</a> and my data in a <code>var data</code> at the end. </p>
  
  <p>I'd guess the problem arrives at line 9, with <code>var line</code>, probably badly written. 
  Lines 26, 27, 28 <code>console.log</code> fine. </p>
  
  <p>Thank you very much for your help!</p>