title: Is there histo function in MATLAB?
body: <p>histo function in MATLAB, does anyone knows what it does? histo(image) what does this return?</p>
  
  <p>I found in google but there I couldnt find any predefined function in MATLAB. Is there some new includes in Latest MATLAB. If anyone knows please explain what is happening below.</p>
  
  <p><code>hist=histo(image);
  pdf=hist/sum(hist);
  t_new=round(sum(pdf.*[0:255]));</code></p>