  # numpy.atleast_3d () in Python

Arrays | NumPy | Python Methods and Functions

Input includes scalars, lists, lists of tuples, tuples, tuples of tuples, tuples of lists, and ndarrays.

Syntax: numpy.atleast_3d (* arrays)

Parameters:
arrays1, arrays2,…: [array_like] One or more array-like sequences. Non-array inputs are converted to arrays. Arrays that already have three or more dimensions are preserved.

Return: An array, or list of arrays, each with arr.ndim & gt; = 3. Copies are avoided where possible , and views with three or more dimensions are returned. For example, a 1-D array of shape (N,) becomes a view of shape (1, N, 1), and a 2-D array of shape (M, N) becomes a view of shape (M, N, 1).

Code # 1: Work

` `

 ` # Python program explaining ` ` # numpy.atleast_3d () function `   ` import ` ` numpy as geek ` ` in_num = 10 ``   print ( "Input number:" , in_num)     out_arr   = geek.atleast_3d (in_num) print ( "output 3d array from input number:" , out_arr)  `

Output:

` Input number: 10 output 3d array from input number: [[]] `

Code # 2: Work

 ` # Python program explaining ` ` # numpy.atleast_3d () function `   ` import ` ` numpy as geek `   ` my_list ` ` = ` ` [[` ` 2 ` `, ` ` 6 ` `, ` ` 10 ` `], ` ` [` ` 8 ` `, ` ` 12 ` `, ` ` 16 ` `]] `   ` print ` ` (` ` "Input list:" ` `, my_list) `   ` out_arr = geek.atleast_3d (my_list) `` print ( "output array:" , out_arr)  `

Output:

` Input lis t: [[2, 6, 10], [8, 12, 16]] output array: [[  ] [  ]] `

Code # 3: Work

 ` # Python program explaining ` ` # numpy.atleast_3d () function ` ` # when inputs are in high dimension `   ` import ` ` numpy as geek `   ` in_arr ` ` = ` ` geek.arange (` ` 16 ` `). reshape (` ` 1 ` `, ` ` 4 ` `, ` ` 4 ` `) ` ` print ` ` (` ` "Input array:" ` `, in_arr) `   ` out_arr ` ` = ` ` geek.atleast_3d (in_arr) ` ` print ` ` (` ` "output array:" ` `, out_arr) ` ` print (in_arr is out_arr) `` `

Output:

` Input array: [[[0 1 2 3] [4 5 6 7] [8 9 10 11] [12 13 14 15]]] output array: [[[0 1 2 3] [4 5 6 7] [8 9 10 11] [12 13 14 15]]] True `