Python | Numpy np.fft2() method

Python | Numpy np.ifft2() method

Last Updated : 21 Nov, 2019

With the help of np.ifft2() method, we can get the 2-D Inverse Fourier Transform by using np.ifft2() method.

Syntax : np.fft2(Array) Return : Return a 2-D series of inverse fourier transformation.

Example #1 : In this example we can see that by using np.ifft2() method, we are able to get the 2-D series of inverse fourier transformation by using this method.

Python3 1=1

# import numpy
import numpy as np

a = np.array([[5, 4, 6, 3, 7], [-1, -3, -4, -7, 0]])
# using np.ifft2() method
gfg = np.fft.ifft2(a)

print(gfg)

Output :

[[ 1. +0.j 0.80901699-0.21796276j -0.30901699-0.92330506j -0.30901699+0.92330506j 0.80901699+0.21796276j] [ 4. +0.j -0.5854102 +0.j 0.0854102 +0.j 0.0854102 +0.j -0.5854102 +0.j ]]

Example #2 :

Python3 1=1

# import numpy
import numpy as np

a = np.array([[-5.5, 4.4, -6.6, 3.3, -7.7], [1.1, -3.3, 4.4, -7.7, 0]])
# using np.ifft2() method
gfg = np.fft.ifft2(a)

print(gfg)

Output :

[[-1.76+0.j -0.11+0.96624249j -0.11+0.30801859j -0.11-0.30801859j -0.11-0.96624249j] [-0.66+0.j -0.66+0.17149948j -0.66+2.99751362j -0.66-2.99751362j -0.66-0.17149948j]]

Python | Numpy np.fft2() method

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