title: Combine rownames from different lists in a dataframe
body: <p>I have a question about lists in R. I have a list within 16 list containing a list with variables like this:</p>
  
  <pre><code>x
  
  [[1]]
    A  1   3
    B  4   2
  
  [[2]]
    C  23  4
    D  9   22
    E  4   54
  </code></pre>
  
  <p>The A,B,C and D are rownames in the lists. Now I want to create a file that paste only the rownames in a dataframe. Each row in the dataframe contains 1 list in the total list.</p>
  
  <pre><code>A B 
  C D E
  </code></pre>
  
  <p>Can anyone help me with this? I thought maybe someting like do.call(rbind, rownames(x))</p>
  
  <p><strong>EDIT! 05-08-2011</strong></p>
  
  <p>Is there a way to save the rownames list by list? So in the end there are no NA's in the data and the data is unequal? </p>
  
  <p>Thank you all!</p>