SF = subsbr2(F,DT,R0) is the same as subsbr, but also rotates the 
resulting field of an angle THETA given by the temporal integration of 
the angular velocity determined for each field. DT is the sampling time 
(in sec.), and R0 = [X0, Y0] the center of rotation (middle of the 
field if unspecified). 
 

averf, spaverf, vec2scal, rotatef, subsbr. 
Published output in the Help browser 
   showdemo subsbr2