statsmodels.regression.linear_model.GLS.whiten¶ GLS.whiten(x)[source]¶ GLS whiten method. Parameters:¶ x : array_like¶Data to be whitened. Returns:¶ The value np.dot(cholsigmainv,X). Return type:¶ ndarray See also GLSFit a linear model using Generalized Least Squares.