Program sfpca | KL transform. 
[SYNOPSIS]
sfpca < in.rsf > out.rsf verb=y nc=n1 eta=0.9
[PARAMETERS]
float   | eta | =0.9 |   | 	energy ratio for signal subspace [ 0 eta < 1 ]
int     | nc | =n1 |   | 	number of components [ 0 < nc < n1 ] 
bool    | verb | =y |  [y/n] | 	verbosity 
[DIRECTORY]
user/chen
