title: Does someone have a method to import HPLC chromatogram raw data?
body: <p>I am interested in exploring HPLC raw data in R.</p>
  
  <p>I would like to explore the full data from all channels (3d, and four 2d channels).</p>
  
  <p>I am using Empower Pro to produce the data.</p>
  
  <p>Export formats include</p>
  
  <ul>
  <li>ASCII .arw</li>
  <li>AIA .cdf</li>
  <li>OpenLynx .rpt</li>
  </ul>
  
  <p>Example files are available at:</p>
  
  <p><a href="http://dl.dropbox.com/u/2499934/raw27796.arw" rel="nofollow">.arw file</a></p>
  
  <p><a href="http://dl.dropbox.com/u/2499934/raw27795.cdf" rel="nofollow">.cdf file</a></p>
  
  <p>I am at this point unable to get information on the structure of the file type.</p>
  
  <p>Using tools such as read.csv, it appears that either the files do not contain the 3d chromatogram data or this data can not be imported in this way.</p>
  
  <p>Thanks to @Ben Bolker, I was able to open a connection to the .cdf file using the "ncdf" package, but it too appears mostly empty (problem with file or import?). </p>