Synopsis
		sfkdmig2d < infp.rsf > outfp.rsf verb=n dxm=0.5*ds rscale=RSCALE_KDMIG nxo=(nxt-1)*2+1 fxo=fxt dxo=dxt*0.5 nzo=(nzt-1)*5+1 fzo=fzt dzo=dzt*0.2 v0=1.5 dvz=0 angmax=60. aperx=0.5*nxt*dxt offmax=3.0 fmax=0.25/dt noff=1 off0=0. doff=0.1 ls=1 absoff=0 limoff=0 ntr=sf_leftsize (infp, 1) mtr=100 npv=0 ttfile= tvfile= csfile= outfile1=

Parameters
		int absoff=0 1 - use absolute value of offset, 0 - use offset =gx-sx   float angmax=60. migration angle aperature from vertical   float aperx=0.5*nxt*dxt migration lateral aperature   string csfile= input file of cosine tables   float doff=0.1 offset increment in output   float dvz=0 reference velocity vertical gradient   float dxm=0.5*ds sampling interval of midpoints   float dxo=dxt*0.5 horizontal spacing of output trace   float dzo=dzt*0.2 vertical spacing of output trace   float fmax=0.25/dt frequency-highcut for input traces   float fxo=fxt x-coordinate of first output trace   float fzo=fzt z-coordinate of first point in output trace   int limoff=0 1 - limit traces used by offset, 0 - use all traces   int ls=1 flag for line source   int mtr=100 print verbal information at every mtr traces   int noff=1 number of offsets in output   int npv=0 1 - compute quantities for velocity analysis   int ntr=sf_leftsize (infp, 1) maximum number of input traces to be migrated   int nxo=(nxt-1)*2+1 number of output traces   int nzo=(nzt-1)*5+1 number of points in output trace   float off0=0. first offest in output   float offmax=3.0 maximum absolute offset allowed in migration   string outfile1= file containning additional migration output   float rscale=RSCALE_KDMIG scaling for roundoff error suppression   string ttfile= input traveltime tables   string tvfile= input file of traveltime variation tables   float v0=1.5 reference velocity value at surface   bool verb=n [y/n] verbosity flag