// This macro finds the location of the lower right most pixel 
// with the value max, where max is the highest pixel value
// in the image.

   showStatus("Finging pixel with largest value...");
   max = 0;
   width = getWidth(); height = getHeight();
   for (y=0; y<height; y++) {
      if (y%20==0) showProgress(y, height);
      for (x=0; x<width; x++) {
          value = getPixel(x,y);
          if (value>max) {
              max = value;
              xmax = x;
              ymax = y;
          }
      }
  }
  print("A pixel with the max value ("+max+") is located at "+xmax+","+ymax);