r unsplit to get original dataframe back
<p>I have question about unsplit in R. Really appreciate if you could help. </p>

<p>I splitted a dataframe into smaller dataframes, by two factors. </p>

<pre><code>mydf.list=split(df.original,list(factor1,factor2))
</code></pre>

<p>How do I use unsplit to get my dataframe back?  I tried following, but didn't work.</p>

<pre><code>df.updated=unsplit(mydf.list,list(factor1,factor2))
</code></pre>

<p>Thanks a lot.</p>