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+--- Thread: 20 x 20 Integer array with random numbers (/thread-11852.html)
20 x 20 Integer array with random numbers - harryk - Jul-28-2018
How do I make a 20 x 20 array and fill it with random 1s and -1s ? I've tried using A=np.random.randint(-1,1,[20,20])
print(A)
but this includes zeros in the array. So how do I make an array without any zeros?
RE: 20 x 20 Integer array with random numbers - Gribouillis - Jul-28-2018
I suggest
A = 2 * np.random.randint(-1, 1, [20, 20]) + 1
RE: 20 x 20 Integer array with random numbers - ichabod801 - Jul-28-2018
Use np.random.choice. Pass it an array of -1 and 1 and the size.
RE: 20 x 20 Integer array with random numbers - harryk - Jul-28-2018
yeah that works thank you very much