imgRadialRamp

 imgRadialRamp - Make a radial ramp function
 
  img = imgRadialRamp(sz, expt, origin)
 
 The radial ramp can be either linear (default) or raised to power EXPT
 (default = 1).  The origin is normally in the center of the image
 (default = (size+1)/2, [1 1] = upper left), but its location can be
 specified (ORIGIN).  The default size sz = (row,col) is 256,256.

 Examples:
   img = imgRadialRamp([384,384]);  imagesc(img); axis image
   img = imgRadialRamp([128,128],2,[1,1]); imagesc(img); axis image

 Copyright ImagEval Consultants, LLC, 2005.