title: Is it possible to change the ylim and xlim when the plot has already been drawn?
body: <p>As an example, if I want to draw a plot with points 1-5 and add points 5-9, the following would work:</p>
  
  <pre><code>plot(c(1,2,3,4,5), ylim=c(0,10))
  points(c(5,6,7,8,9))
  </code></pre>
  
  <p>However, if I don't know beforehand what numbers the to-be-added points will be (they could be 5-9, could also be 20-29), I can't set the ylim and xlim beforehand. I would like to be able to do something like the following (which does not work):</p>
  
  <pre><code>plot(c(1,2,3,4,5))
  points(c(5,6,7,8,9), ylim=c(0,10)) 
  </code></pre>
  
  <p>Is something like this possible?</p>