Program sftan2dang | 2-D slowness vector to angle transformation. 
[SYNOPSIS]
sftan2dang < in.rsf > out.rsf na=360 da=0.5 oa=0.0 nr=2*nsx dr=0.5*dsx or=osx
[PARAMETERS]
float   | da | =0.5 |   | 	
float   | dr | =0.5*dsx |   | 	line summation sampling 
int     | na | =360 |   | 	
int     | nr | =2*nsx |   | 	line summation samples 
float   | oa | =0.0 |   | 	
float   | or | =osx |   | 	line summation origin 
[DIRECTORY]
user/browaeys
