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Module « numpy.matlib »

Fonction moveaxis - module numpy.matlib

Signature de la fonction moveaxis

def moveaxis(a, source, destination) 

Description

help(numpy.matlib.moveaxis)

Move axes of an array to new positions.

Other axes remain in their original order.

Parameters
----------
a : np.ndarray
    The array whose axes should be reordered.
source : int or sequence of int
    Original positions of the axes to move. These must be unique.
destination : int or sequence of int
    Destination positions for each of the original axes. These must also be
    unique.

Returns
-------
result : np.ndarray
    Array with moved axes. This array is a view of the input array.

See Also
--------
transpose : Permute the dimensions of an array.
swapaxes : Interchange two axes of an array.

Examples
--------
>>> import numpy as np
>>> x = np.zeros((3, 4, 5))
>>> np.moveaxis(x, 0, -1).shape
(4, 5, 3)
>>> np.moveaxis(x, -1, 0).shape
(5, 3, 4)

These all achieve the same result:

>>> np.transpose(x).shape
(5, 4, 3)
>>> np.swapaxes(x, 0, -1).shape
(5, 4, 3)
>>> np.moveaxis(x, [0, 1], [-1, -2]).shape
(5, 4, 3)
>>> np.moveaxis(x, [0, 1, 2], [-1, -2, -3]).shape
(5, 4, 3)

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