DOC Document PCA().fit_transform changes array order
@@ -359,6 +359,10 @@ class PCA(_BasePCA):
-------
X_new : array-like, shape (n_samples, n_components)
+ Notes
+ -----
+ This method returns a Fortran-ordered array. To convert it to a
+ C-ordered array, use 'np.ascontiguousarray'.
"""
U, S, V = self._fit(X)
U = U[:, :self.n_components_]
