Returns the estimated trait correlation matrix

        Args:
            term_i:     index of the term we are interested in

def getEstTraitCorrCoef(self,term_i=None):
        """
        Returns the estimated trait correlation matrix

        Args:
            term_i:     index of the term we are interested in
        """
        cov = self.getEstTraitCovar(term_i)
        stds=SP.sqrt(cov.diagonal())[:,SP.newaxis]
        RV = cov/stds/stds.T
        return RV