Hi, I try to update values in a single field of numpy record array based on a condition defined in another array. I found that that the result depends on the order in which I apply the boolean indices/field names.
For example: cond = np.zeros(5, dtype=np.bool) cond[2:] = True X = np.rec.fromarrays([np.arange(5)], names='a') X[cond]['a'] = -1 print X returns: [(0,) (1,) (2,) (3,) (4,)] (the values were not updated) X['a'][cond] = -1 print X returns: [(0,) (1,) (-1,) (-1,) (-1,)] (it worked this time). I find this behaviour very confusing. Is it expected? Would it be possible to emit a warning message in the case of "faulty" assignments? Bartosz _______________________________________________ NumPy-Discussion mailing list [email protected] http://mail.scipy.org/mailman/listinfo/numpy-discussion
