Synopsis
		sfatm2 < in.rsf > out.rsf nfw1= nfw2=nfw1 alpha= boundary=n verb=n type=

1D filter (nfw2=1); 2D filter (otherwise)
median filter (alpha=0.5); mean filter (alpha=0.)

Parameters
		float alpha= 0.0 <= alpha <= 0.5: median filter (alpha=0.5); mean filter (alpha=0.)   bool boundary=n [y/n] if y, boundary is data, whereas zero   int nfw1= filter-window length in n1 direction (positive and odd integer)   int nfw2=nfw1 filter-window length in n2 direction (default=nfw1)   string type= [rectangular,cross] 2-D window type, the default is rectangular   bool verb=n [y/n] verbosity flag