def METHOD_NAME(self, var, weight):
    coeff = self._getGeomCoeff(var)
    if self.coeffMatrix is None:
        self.coeffMatrix = {'cell 1 diag' : coeff * weight['cell 1 diag'],
                            'cell 1 offdiag': coeff * weight['cell 1 offdiag'],
                            'cell 2 diag': coeff * weight['cell 2 diag'],
                            'cell 2 offdiag': coeff * weight['cell 2 offdiag']}
    return self.coeffMatrix