Anymatrix

version 1.0 (1.05 MB) by
A MATLAB matrix collection with an interface to organize matrices

Updated 11 Oct 2021

From GitHub

anymatrix - An extensible MATLAB matrix collection

Anymatrix is a MATLAB toolbox that provides an extensible collection of matrices, organized in groups, with the ability to search the collection by matrix properties.

Currently, the built-in collection contains matrices organized into 7 groups:

• contest - the CONTEST test matrix toolbox of random matrices from networks.
• core - miscellaneous matrices.
• gallery - matrices from the MATLAB gallery.
• matlab - other MATLAB matrices (not in gallery).
• nessie - matrices from real-life networks.
• regtools - matrices from regularization problems.

What's New

The following matrices have been added since v1.0.

• core/collatz
• core/hess_sublu
• core/milnes
• core/pick

Quick start

Installation

Clone the repository and add the root directory anymatrix/ to the MATLAB search path.

Inspect and generate a matrix

List the groups in the collection.

G = anymatrix('groups')

Show matrices in the core group.

M = anymatrix('groups', 'core')

Show help of a beta matrix in the core group.

anymatrix('help', 'core/beta')

Show properties appended to the beta matrix.

P = anymatrix('properties', 'core/beta')

Generate the 10-by-10 beta matrix.

[A, R] = anymatrix('core/beta', 10)

Search for matrices

Start by listing all the supported properties by the anymatrix.

P = anymatrix('properties')

Search for matrices that do not have a property 'symmetric'.

M = anymatrix('properties', 'not symmetric')

Look for matrices that are tridiagonal and not positive, or tridiagonal and symmetric.

M = anymatrix('properties', 'tridiagonal and (symmetric or not positive)')

Look for matrices that mention ' zero ' in their help comments.

M = anymatrix('lookfor', ' zero ')

Short forms

For invocations that use only character vectors or strings, the MATLAB command form of invocation (as opposed to the functional form) can be used:

anymatrix help core/beta

Commands can be abbreviated to the first one or two letters that uniquely specify them:

anymatrix p core/beta

Full list of accepted commands

List all the available commands and shorthand aliases of commands.

anymatrix('help')

Examples

The examples/ directory contains codes that illustrate how to run tests over subsets of the matrices in Anymatrix.

Requirements

MATLAB 2020b or newer is required.

References

Nicholas J. Higham and Mantas Mikaitis. Anymatrix: An Extendable MATLAB Matrix Collection, Users' Guide. MIMS EPrint 2021.15, Manchester Institute for Mathematical Sciences, The University of Manchester, UK. Oct. 2021.

Nicholas J. Higham and Mantas Mikaitis. Anymatrix: An Extendable MATLAB Matrix Collection. Numer. Algorithms, 2021.

Licence

Cite As

Bib citations: https://github.com/mmikaitis/anymatrix/blob/master/citation.bib

MATLAB Release Compatibility
Created with R2021b
Compatible with R2020b and later releases
Platform Compatibility
Windows macOS Linux

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To view or report issues in this GitHub add-on, visit the GitHub Repository.
To view or report issues in this GitHub add-on, visit the GitHub Repository.