title: Memory Usage in R
body: <p>After creating large objects and running out of RAM, I will try and delete the objects in my current environment using</p>
  
  <pre><code>rm(list=ls())
  </code></pre>
  
  <p>When I check my RAM usage, nothing has changed.  Even after calling <code>gc()</code> nothing has changed.  I can only replenish my RAM by quitting R.</p>
  
  <p>Anybody have advice for dealing with memory-intensive objects within R?</p>