Synopsis
		sfmiss2 < in.rsf > out.rsf mask=mask.rsf niter=100 nliter=1 filt1=3. filt2=filt1 eps=0.0001 shape=n force=y

Parameters
		float eps=0.0001 regularization parameter   float filt1=3.   float filt2=filt1 smoothing radius   bool force=y [y/n] if y, keep known values   string mask= optional input mask file for known data (auxiliary input file name)   int niter=100 Number of iterations   int nliter=1 Number of reweighting iterations   bool shape=n [y/n] if y, estimate shaping