title: Train Linear SVM Model
body: <p>I have a dataset with 50 predictor variables and two class labels (disease/normal).  When I run this code, I get the error message below.  Any ideas on how to correct this error?</p>
  
  <pre><code>[Mdl,FitInfo] = fitclinear(values(:,1:50),classes)
  </code></pre>
  
  <p>Error using classreg.learning.Linear.prepareDataCR (line 140)
  X must be a numeric matrix.</p>