title: Scaling in protovis when using Layout.Force
body: <p>I am using the example found on protovis site to display the nodes of a graph <a href="http://vis.stanford.edu/protovis/ex/force.html" rel="nofollow">http://vis.stanford.edu/protovis/ex/force.html</a></p>
  
  <p>I simply cannot initialize the graph with a zoom of 2x for example, so it won't look that small when started. </p>
  
  <pre><code>&lt;script type="text/javascript+protovis"&gt;
  
      var w = document.body.clientWidth,
          h = document.body.clientHeight,
          colors = pv.Colors.category19();
  
      var vis = new pv.Panel()
          .width(w)
          .height(h)
          .fillStyle("white")
          .event("mousedown", pv.Behavior.pan())
          .event("mousewheel", pv.Behavior.zoom());
  
      var force = vis.add(pv.Layout.Force)
          .nodes(miserables.nodes)
          .links(miserables.links);
  
      force.link.add(pv.Line);
  
      force.node.add(pv.Dot)
          .size(function(d) (d.linkDegree + 4) * Math.pow(this.scale, -1.5))
          .fillStyle(function(d) d.fix ? "brown" : colors(d.group))
          .strokeStyle(function() this.fillStyle().darker())
          .lineWidth(1)
          .title(function(d) d.nodeName)
          .event("mousedown", pv.Behavior.drag())
          .event("drag", force);
  
      vis.render();
  
  &lt;/script&gt;
  </code></pre>