title: resizing window and setting margins for minimum
body: <p>I'm trying to create a tree graph, and since the "father" has a lot of "children" I'd like it to be a very wide graph. Therefore, I tried to resize the window with the windows option and set margins to zero width in order to have a wide graph. These are my program lines:</p>
  
  <pre><code>windows(heigth=7, width=14, record=TRUE, rescale="fit")
  par(mar=c(1,0,1,0), omi=c(0,0,0,0), oma=c(0,0,0,0))
  plot(graph_name,layout=layout.reingold.tilford(tree))
  </code></pre>
  
  <p>I get a wide device window but the plot is in the middle and not wide-spreaded. What am I doint wrong?</p>
  
  <p>Thanks in advance,</p>
  
  <p>Noam</p>