Program sfatm2 | 2D alpha-trimmed-mean filtering. 
[SYNOPSIS]
sfatm2 < in.rsf > out.rsf nfw1= nfw2=nfw1 alpha= boundary=n verb=n type=
[COMMENTS]
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 
[DIRECTORY]
user/yliu
