title: Is there such "colsd" in R?
body: <p>I am using in my code <code>colSums</code> but I also need the standard deviation beside the sum.
  I searched in the internet and found this page which contain only:</p>
  
  <pre><code>colSums
  colMeans
  </code></pre>
  
  <p><a href="http://stat.ethz.ch/R-manual/R-devel/library/base/html/colSums.html" rel="noreferrer">http://stat.ethz.ch/R-manual/R-devel/library/base/html/colSums.html</a></p>
  
  <p>I tried this:</p>
  
  <pre><code>colSd
  </code></pre>
  
  <p>but I got this error:</p>
  
  <pre><code>Error: could not find function "colSd"
  </code></pre>
  
  <p>How I can do the same thing but for standard deviation:</p>
  
  <pre><code>colSd
  </code></pre>
  
  <p>Here is the code:</p>
  
  <pre><code>results &lt;- colSums(x,na.rm=TRUE)#### here I want colsd
  </code></pre>