title: Saving and loading data.frames
body: <p>I have made a dataframe based on a set of twitters in the following form:</p>
  
  <pre><code> rdmTweets &lt;- userTimeline("rdatamining", n=200)
   df &lt;- do.call("rbind", lapply(rdmTweets, as.data.frame))
  </code></pre>
  
  <p>Now I am saving the data frame with save in this way:</p>
  
  <pre><code> save(df, file="data")
  </code></pre>
  
  <p>How I can load that saved data frame for future use? When I use:</p>
  
  <pre><code>  df2 &lt;- load("data")
  </code></pre>
  
  <p>and I apply <code>dim(df2)</code> it should return the quantity of tweets that data frame has, but it only shows 1.</p>