[Numpy-discussion] Extracting required indices from the array of tuples

[Simen Langseth]

import numpy as np
from scipy import signal

y = np.array([[2, 1, 2, 3, 2, 0, 1, 0],
             [2, 1, 2, 3, 2, 0, 1, 0]])

maximas = signal.argrelmax(y, axis=1)

print maximas

(array([0, 0, 1, 1], dtype=int64), array([3, 6, 3, 6], dtype=int64))


I want to extract only the first maxima of both rows, i.e., [3, 3] using
the tuples (maximas). How would you do it?
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