title: Using R, how can I create an .RTF file containing a table with a merged cell?
body: <p>I need to create an <code>rtf</code> file with a "complexe" table inside (in fact I just need horizontal merged cell).</p>
  
  <p>I tried the <code>{RTF}</code> package, but the <code>addTable</code> function takes a data.frame or table object without any parameter like colspan ..</p>
  
  <p>I tried to use Rmarkdown with <code>rtf_document</code> output, but Rmarkdown doesnt support merged cell (<code>kableExtra</code>, create an html object to do so)</p>
  
  <p>I know how to create a <code>docx</code> with this kind of table (using <code>{officer}</code> and <code>{flextable}</code>) so maybe it could be a good solution to convert a <code>.docx</code> file into <code>.RTF</code> .. any idea how to do this? (or maybe latex -> RTF ?)</p>
  
  <p>Regards</p>