Synopsis
		sfshot2cmp < in.rsf > out.rsf mask=msk.rsf positive=y half=y

The axes in the input are {time,offset,shot}
The axes in the output are {time,offset,midpoint}

Parameters
		bool half=y [y/n] if y, the second axis is half-offset instead of full offset   string mask= auxiliary output file name   bool positive=y [y/n] initial offset orientation

Used In
		RSF          scons/rsf   SEP          oc2/cup