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Normalize a matrix
Successively normalizes a square matrix. UNDER CONSTRUCTION
2024.Nov.25 06:35:19
Matrix mode   Mode: given (below) or pure random or (repeatable) seeded.
Order Order of matrix, if random.
Matrix Given matrix.
Tolerance Tolerance in evolution.
Show values Show graph coordinates.

Successively normalizes a matrix, by rows, then by columns, and so on, till stabilization.

Files involved: P-normalize.php (this one), Normalize.php, normalize.py.

Draws plots of the determinants and other matrix measures.


Computation structure — A PHP file (this page: 'P-normalize.php') calls (via 'action=...') an intermediate PHP file ('Normalize.php'), which (through $_POST) sends the problem data as command line arguments to a Python script. This last does the computing, and makes 'system' call(s) to 'gnuplot', for the final (temporary) webpage.

Keywords: PHP, command line arguments, Python script, gnuplot.

References: Plate: MatrixNormalize

• (Wikipedia) PHP (from Personal Home Page)

• CISTI'2025, 20.ª Conferência Ibérica de Sistemas e Tecnologias de Informação (20.th Iberian Conference on Information Systems and Technologies), Porto (Portugal), 19–22 June 2025 (to be confirmed).

• 1821-08-31: von Helmholtz, Hermann Ludwig Ferdinand (†1894-09-08, 73 yrs.).

 
 
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Created: 2024-08-31 — Last modified: 2024-09-02