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Python | Numpy np.ifftn() method

  • Last Updated : 21 Nov, 2019

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

Syntax : np.ifftn(Array)

Return : Return a N-D series of inverse fourier transformation.

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




# import numpy
import numpy as np
  
a = np.array([-1, 3, -4, 7, 0])
  
# using np.ifftn() method
gfg = np.fft.ifftn(a)
  
print(gfg)

Output :

[ 1. +0.j -0.5-0.72249365j -0.5+2.44499549j -0.5-2.44499549j
-0.5+0.72249365j]

Example #2 :




# 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.ifftn() method
gfg = np.fft.ifftn(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]]

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