def transform(self, X):
        """Transform the data.

        Parameters
        ----------
        X : array-like, shape = (n_samples, n_timestamps)
            Data to transform.

        Returns
        -------
        X_new : array-like, shape = (n_samples, n_timestamps)
            Transformed data.

        """
        X = check_array(X, dtype='float64', force_all_finite='allow-nan')
        transformer = SklearnPowerTransformer(
            method=self.method, standardize=self.standardize
        )
        X_new = transformer.fit_transform(X.T).T
        return X_new