Matrix Depot

Matrix Depot is an extensible test matrix collection for Julia. It gives access to a wealth of sample and test matrices and accompanying data:

• matrices generated locally, with arguments controlling the special case, and
• matrices downloaded from the SuiteSparse Matrix Collection (formerly University of Florida Matrix Collection) and the Matrix Market Collection.

Remote matrices and their metadata are cached on the local disk.

• Source on GitHub
• Release notes

Installation

pkg> add MatrixDepot

On Windows, MinGW/MSYS or Cygwin is needed to use the SuiteSparse and Matrix Market interfaces.

Quick start

using MatrixDepot

A = matrixdepot("hilb", 10)       # locally generated 10×10 Hilbert matrix
A = matrixdepot("HB/1138_bus")    # named matrix of the SuiteSparse collection
A = matrixdepot(sp(1))            # same matrix by numerical id

md = mdopen("*/bfly")             # matrix with extra data
A = md.A
co = md.coord
tx = md("Gname_10.txt")

mdinfo("gravity")                 # documentation of a matrix
md = mdopen("gravity", 10, false) # local problem with right-hand side and solution
A, b, x = md.A, md.b, md.x

• Basics
• Remote Collections
• Matrices
• Test Problems for Regularization Methods
• Random Graphs
• Groups
• User Generators
• Examples
• API