Program sfdipflt | 2D dip filter 
[SYNOPSIS]
sfdipflt < in.rsf > out.rsf dip=dip.rsf nf=1 interp= filt=
[PARAMETERS]
file    | dip | = |   | 	auxiliary input file name
string  | filt | = |   | 	filter type: [median],mean 
string  | interp | = |   | 	interpolation method: [nearest],linear 
int     | nf | =1 |   | 	filter length 
[DIRECTORY]
user/chen
