title: R - Gamma Cumulative Distribution Function
body: <p>I want to calculate the Gamma CDF for an array of data that I have. I have calculated the alpha and beta parameters, however I am not sure of how to calculate the CDF in R,(Is there something like Matlab's gamcdf?). </p>
  
  <p>I have seen some people use <code>fitdistr</code>, or <code>pgamma</code>, but I do not understand how to put the alpha and beta values or I do not need them at all?</p>
  
  <p>Thanks.</p>