title: How to calculate Total least squares in R? (Orthogonal regression)
body: <p>I didn't find a function to calculate the orthogonal regression (TLS - Total Least Squares).</p>
  
  <p>Is there a package with this kind of function?</p>
  
  <p><strong>Update:</strong> I mean calculate the distance of each point symmetrically and not asymmetrically as <code>lm()</code> does.</p>