def _cov_eigen(self, X):
        raise NotImplementedError('Not implemented in _PCABase. Use a ' +
                                  'subclass (and implement it there).')
Get a copy of the updated var and file and pass it to the Defined
dataset/ETHPy150Open lisa-lab/pylearn2/pylearn2/models/pca.py/_PCABase._cov_eigen--crossover with--dataset/ETHPy150Open VisTrails/VisTrails/contrib/cdat/cdat_window.py/QVariableView.defineVariableEvent