ally collected on the number of 
packages on the Comprehensive R Archive 
Network (CRAN) at different dates.
</p>
<p>NOTE:  This could change in the future.  
See Details below.  
</p>


<h3>Usage</h3>

<pre><code class='language-R'>data(CRANpackages)
</code></pre>


<h3>Format</h3>

<p>A <code>data.frame</code> containing:
</p>

<dl>
<dt>Version</dt><dd>
<p>an ordered factor of the R version 
number primarily in use at the time.  
This was taken from archives of the 
major releases at
<a href="https://svn.