title: The following object is masked from ‘package:stats’:lowess
body: <p>When I use R ROCR package, I got error message.</p>
  
  <pre><code>Loading required package: ROCR
  Loading required package: gplots
  
  Attaching package: ‘gplots’
  
  The following object is masked from ‘package:stats’:
  
  lowess
  </code></pre>
  
  <p>What should I do?
  I use R 3.1.3, OSX 10.11.6, and Rstudio  0.98.1103.</p>