Finding the maximum element from a matrix with Python numpy.argmax()
import numpy as np
a = np.matrix([[1,2,3,33],[4,5,6,66],[7,8,9,99]])
print(np.argmax(a)) # 11, which is the position of 99
print(np.argmax(a[:,:])) # 11, which is the position of 99
print(np.argmax(a[:1])) # 3, which is the position of 33
print(np.argmax(a[:,2])) # 2, which is the position of 9
print(np.argmax(a[1:,2])) # 1, which is the position of 9np find arg max in matrix
>>> a = numpy.random.random((10, 10))
>>> numpy.unravel_index(a.argmax(), a.shape)
(6, 7)
>>> a[6, 7] == a.max()
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