[Python] Convert a 1D array to a 2D array in numpy

Discussão em 'Python' iniciado por Stack, Agosto 10, 2025.

  1. Stack

    Stack Membro Participativo

    I want to convert a 1-dimensional array into a 2-dimensional array by specifying the number of columns in the 2D array. Something that would work like this:

    > import numpy as np
    > A = np.array([1,2,3,4,5,6])
    > B = vec2matrix(A,ncol=2)
    > B
    array([[1, 2],
    [3, 4],
    [5, 6]])


    Does numpy have a function that works like my made-up function "vec2matrix"? (I understand that you can index a 1D array like a 2D array, but that isn't an option in the code I have - I need to make this conversion.)

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