This function is similar to imagesc, with the difference that this also draw 
  the points contained in the variable POINTS. Additionally can be selected the
  color of the points.

  imagesc_with_points(MAT, POINTS);
  hf=imagesc_with_points(MAT, POINTS);
  hf=imagesc_with_points(MAT, POINTS,'w');

  
  Input:
  MAT       is a matrix that will be used like the canvas to draw the points. 
  POINTS    is a matrix with two columns and M lines. Thus, each line represent 
            one point in study.(line,column).
  OPTION    is the color of the points, by default OPTION='r', you can try 'r',
            'g', 'b', 'w','k'.

  Output:
  hf        returns the figure handler.


  For help, bug reports and feature suggestions, please visit:
  http://www.nongnu.org/bsltl

Package: bsltl