title: Passing a list of arguments to plot in R
body: <p>I would like to use the same arguments for several calls to <code>plot</code>.
  I tried to use a list (which can serve as a dictionary) :</p>
  
  <pre><code>a &lt;- list(type="o",ylab="")
  plot(x,y, a)
  </code></pre>
  
  <p>But it does not work :</p>
  
  <pre><code>Error in plot.xy(xy, type, ...) : invalid plot type 
  </code></pre>
  
  <p>Any suggestion ?</p>