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How to convert 2 dimensional in 1 dimensional array

#source: https://www.kite.com/python/answers/how-to-convert-a-2d-numpy-array-to-a-1d-array-in-python

array_1d = array_2d. flatten() flatten `array_2d`
print(array_1d)

How to convert one dimensional array into two dimensional array

x = x.reshape(-1, 1)

# remember to check shape of your variable using x.shape, if it shows
# (y, n) then it is already 2D, if it shows (y,) instead, it is 1D.

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