title: R package xtable, how to create a latextable with multiple rows and columns from R
body: <p>My goal is to create latextable with multirow/multicolumn features from R.
  The latextable I want should look like this:</p>
  
  <pre><code>               colLabel  |  colLabel2
                           |
                   a1  a2  |   a3    a4  
   -------------------------------------
               b1  1    2  |   5     6
   rowLabel1               |
               b2  3    4  |   7     8
   --------------------------------------
               b3  9   10  |   13    14
   rowLabel2               |
               b4  11  12  |   15    16
   --------------------------------------
  </code></pre>
  
  <p>I am currently using xtable but I cannot figure out how to create multirow using this package.
  Could anyone tell me how to create such table?</p>
  
  <p>Thank you in advance</p>