The documentation of numpy.unique http://docs.scipy.org/doc/numpy/reference/generated/numpy.unique.html does not seem to promise that return_index=True will always index the *first* occurrence of each unique item, which I believe is the current behavior.
A promise would be nice. Is it intended? Alan Isaac _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion