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

Used In
		CHEN          test/fpca