c=max_corrcoef(Signal, Error, Model) maximum correlation coefficient the return value is 1-corrcoef(Signal, Model) with non diagonal term of the correlation matrix. This value lies within [0 2]. When 0, it is a perfect match. This criteria does not use the error bars. <http://en.wikipedia.org/wiki/Correlation_coefficient> (c) E.Farhi, ILL. License: EUPL.