Sparse and Dense Matrix Classes and Methods R package Matrix version 1.7-5 CRAN Task View: Econometrics (https://CRAN.R-project.org/view=Econometrics) CRAN Task View: NetworkAnalysis (https://CRAN.R-project.org/view=NetworkAnalysis) CRAN Task View: NumericalMathematics (https://CRAN.R-project.org/view=NumericalMathematics) A rich hierarchy of sparse and dense matrix classes, including general, symmetric, triangular, and diagonal matrices with numeric, logical, or pattern entries. Efficient methods for operating on such matrices, often wrapping the 'BLAS', 'LAPACK', and 'SuiteSparse' libraries. Software Depends: R (>= 4.4), methods Imports: grDevices, graphics, grid, lattice, stats, utils Suggests: MASS, datasets, sfsmisc, tools Enhances: SparseM, graph Martin Maechler <mmaechler+Matrix@gmail.com> Comprehensive R Archive Network (CRAN) Douglas Bates [aut] (ORCID: <https://orcid.org/0000-0001-8316-9503>), Martin Maechler [aut, cre] (ORCID: <https://orcid.org/0000-0002-8685-9910>), Mikael Jagan [aut] (ORCID: <https://orcid.org/0000-0002-3542-2938>), Timothy A. Davis [ctb] (ORCID: <https://orcid.org/0000-0001-7614-6899>, SuiteSparse libraries, collaborators listed in dir(system.file("doc", "SuiteSparse", package="Matrix"), pattern="License", full.names=TRUE, recursive=TRUE)), George Karypis [ctb] (ORCID: <https://orcid.org/0000-0003-2753-1437>, METIS library, Copyright: Regents of the University of Minnesota), Jason Riedy [ctb] (ORCID: <https://orcid.org/0000-0002-4345-4200>, GNU Octave's condest() and onenormest(), Copyright: Regents of the University of California), Jens Oehlschlägel [ctb] (initial nearPD()), R Core Team [ctb] (ROR: <https://ror.org/02zz1nj61>, base R's matrix implementation) GPL (>= 2) file LICENCE (https://CRAN.R-project.org/package=Matrix/LICENCE) 2026-03-21 application/tgz https://CRAN.R-project.org/package=Matrix doi:10.32614/CRAN.package.Matrix