SHUFFLE_MATRIX

Download Flojoy Studio to try this app

Return a matrix that is randomly shuffled by the first axis Inputs ------ default : Matrix The input Matrix Params: axis : int Axis along the matrix is shuffled. If axis is 0, shuffled by row and if it is 1, shuffled by column. Returns: out : Matrix Shuffled input Matrix

Python Code

from numpy.random import permutation
from flojoy import flojoy, Matrix


@flojoy
def SHUFFLE_MATRIX(
    default: Matrix,
    axis: int = 0,
) -> Matrix:
    """Return a matrix that is randomly shuffled by the first axis

    Inputs
    ------
    default : Matrix
        The input Matrix

    Parameters
    ----------
    axis : int
        Axis along the matrix is shuffled. If axis is 0, shuffled by row and if it is 1, shuffled by column.

    Returns
    -------
    Matrix
        Shuffled input Matrix
    """

    if axis == 1:
        indices_1 = permutation(default.m.shape[0])
        shuffledMatrix = default.m[indices_1, :]
    elif axis == 0:
        indices_2 = permutation(default.m.shape[1])
        shuffledMatrix = default.m[:, indices_2]
    else:
        raise AssertionError(f"Axis must be either 0 or 1, but provided {axis}")

    return Matrix(m=shuffledMatrix)

Find this Flojoy Block on GitHub

Example App

Having problems with this example app? Join our Discord community and we will help you out!

Press enter or space to select a node.You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.

Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.

Download this Flojoy App

In this example, we generate a matrix type data using MATRIX node.

Using SHUFFLE_MATRIX, we randomly shuffle it by the first axis and visualize it using MATRIX_VIEW node.