title: Undefined function or method join
body: <p>While compiling this matlab code, I get the error <code>Undefined function or method 'join' for input arguments of type 'single'</code> </p>
  
  <p><em>Why is it so?</em></p>
  
  <pre><code>imshow(newimage);
  hh=im2single(H_Channel);
  ss=im2single(S_Channel);
  vv=im2single(V_Channel);
  
  hsv=join(hh,ss,vv);
  outputnew=hsv2rgb(hsv);
  figure,
  imshow(outputnew);
  </code></pre>