Synopsis
		sfstacks < cmp.rsf > stk.rsf offset=offset.rsf mask=msk.rsf half=y str=0.5 mute=12 nv= v0= dv= CDPtype= slowness=n squared=n h0=0. extend=4

Parameters
		int CDPtype=   float dv= step in velocity   int extend=4 trace extension   float h0=0. reference offset   bool half=y [y/n] if y, the second axis is half-offset instead of full offset   string mask= auxiliary input file name   int mute=12 mute zone   int nv= number of velocities   string offset= auxiliary input file name   bool slowness=n [y/n] if y, use slowness instead of velocity   bool squared=n [y/n] if y, the slowness or velocity is squared   float str=0.5 maximum stretch allowed   float v0= first velocity

Used In
		DATA          nankai/data   GEO384S          hw3/dmo hw6/rtm   TCCS          ovc/nankai probdif/nankai sparse/vg t2dweak/alaska varipick/newviking wetm/nankaizone   ZJU          diffrlrra/nankai_new