title: nvd3 scatter chart circle size not working
body: <p>I am trying to change the size of the circles in the scatter plot. I use the attribute size but even if I change it to 10, 100 etc, the size of the circles is not increasing. I tried using <code>.sizeRange([minArea, maxArea])</code> and the maximum size increases. I am unable to understand how the <code>size</code> effects the perceptible sizes. Is it relative size?</p>
  
  <p><strong>Edit</strong></p>
  
  <p>If you have </p>
  
  <pre><code>function(groups, points) {
  var data = [],
    shapes = ['circle', 'cross', 'triangle-up', 'triangle-down', 'diamond', 'square'],
    random = d3.random.normal();
  
  for (i = 0; i &lt; 1; i++) {
    data.push({
      key: 'Group ' + i,
      values: []
  });
  
  for (j = 0; j &lt; 4; j++) {
       data[i].values.push({
          x: j
        , y: j
        , size: j
      });
    }
  }
  }
  </code></pre>
  
  <p>Even if we change the j loop from <code>j&lt;4</code>to <code>j&lt;8</code>, the size of the largest circle remains the same. We can try the code <a href="http://nvd3.org/livecode/index.html#codemirrorNav" rel="nofollow">here</a>.</p>