Synopsis
		sfdtw-errors < _in.rsf ref=_ref.rsf > _out.rsf maxshift= exp=2

program calculates the alignment errors
between a reference and matching trace
given a maximum shift (maxshift=) and an error exponent (exp=)

Parameters
		float exp=2 error exponent (g-f)^exp   int maxshift= maximum shift   string ref= auxiliary input file name