Program sfradonslope2 | Directional angle transform for 3-D time image cube I(x,z,t) into G(x,z,d) 
[SYNOPSIS]
sfradonslope2 < Fimgt.rsf > Fimgd.rsf slowness=slowness.rsf nd=nt dd=160.0/(nt-1) d0=-80.0 verb=n
[PARAMETERS]
float   | d0 | =-80.0 |   | 	
float   | dd | =160.0/(nt-1) |   | 	
int     | nd | =nt |   | 	
file    | slowness | = |   | 	auxiliary input file name
bool    | verb | =n |  [y/n] | 	verbosity flag 
[DIRECTORY]
user/browaeys
