Program sfatm1 | 1D alpha-trimmed-mean filtering. 
[SYNOPSIS]
sfatm1 < in.rsf > out.rsf nfw= alpha= boundary=n
[COMMENTS]
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     | nfw | = |   | 	filter-window length (positive and odd integer)
[DIRECTORY]
user/yliu
