Synopsis
		sfdipln < in.rsf > out.rsf m=1 n=1 niter=5 liter=20 radius=1.0 eta=0.5 dip0=0.0 verb=n slope=n eps=0.0f rect#= shift#= interp=

Parameters
		float dip0=0.0 starting dip   float eps=0.0f regularization   float eta=0.5 steps for iteration   string interp= interpolation method: maxflat lagrange bspline   int liter=20 number of linear iterations   int m=1 b[-m, ... ,n]   int n=1 b[-m, ... ,n]   int niter=5 number of iterations   float radius=1.0 interpolating radius for opwd   string rect#= size of the smoothing stencil in #-th dimension /auxiliary input file/   string shift#= shifting of the smoothing stencil in #-th dimension /auxiliary input file/   bool slope=n [y/n] slope (y) or dip (n) estimation   bool verb=n [y/n] verbosity flag