magic_matrix


magic_matrix, a Python code which computes a magic matrix, for any odd order n, such that all rows and columns have the same sum.

A magic matrix is an n by n array, whose entries include each positive integer from 1 to n^2, in such a way that each row and column has a common sum. Sometimes the diagonals also form this sum.

When n is odd, there is a simple algorithm for producing a corresponding magic square. When n is even, (and greater than 2!) there is a different, more complicated, algorithm. This code only implements the algorithm for the case when n is odd.

A magic matrix can be created as a list of lists, or as a numpy array. This code demonstrates both approaches, and suggests why the list of lists is a particularly awkward way of dealing with matrices.

Licensing:

The computer code and data files made available on this web page are distributed under the GNU LGPL license.

Languages:

magic_matrix is available in a MATLAB version and an Octave version and a Python version.

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Reference:

  1. Christian Hill,
    Example E6.2,
    Learning Scientific Programming with Python,
    Cambridge University Press,
    Second Edition, 2020,
    ISBN: 978-1108745918

Source Code:


Last modified on 22 January 2023.