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Matrix (version 1.7-2)

Sparse and Dense Matrix Classes and Methods

Description

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.

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Install

install.packages('Matrix')

Monthly Downloads

81,278

Version

1.7-2

License

GPL (>= 2) | file LICENCE

Maintainer

Martin Maechler

Last Published

January 23rd, 2025

Functions in Matrix (1.7-2)

CsparseMatrix-class

Class "CsparseMatrix" of Sparse Matrices in Column-compressed Form

BunchKaufman-class

Dense Bunch-Kaufman Factorizations

BunchKaufman-methods

Methods for Bunch-Kaufman Factorization

Construct a Diagonal Matrix

Virtual Classes Not Yet Really Implemented and Used

The Matrix (Super-) Class of a Class

Construct a Classed Matrix

colSums-methods

Form Row and Column Sums and Means

Contiguity Matrix of U.S. Counties

MatrixFactorization-class

Virtual Class "MatrixFactorization" of Matrix Factorizations

Dense Cholesky Factorizations

Cholesky-methods

Methods for Cholesky Factorization

Compute Approximate CONDition number and 1-Norm of (Large) Matrices

Class "abIndex" of Abstract Index Vectors

Khatri-Rao Matrix Product

Generate a Hilbert matrix

Virtual Class "Matrix" of Matrices

denseMatrix-class

Virtual Class "denseMatrix" of All Dense Matrices

dgCMatrix-class

Compressed, sparse, column-oriented numeric matrices

Koenker-Ng Example Sparse Model Matrix and Response Vector

boolmatmult-methods

Boolean Arithmetic Matrix Products: %&% and Methods

'cbind()' and 'rbind()' recursively built on cbind2/rbind2

Sequence Generation of "abIndex", Abstract Index Vectors

Drop Non-Structural Zeros from a Sparse Matrix

Albers' example Matrix with "Difficult" Eigen Factorization

RsparseMatrix-class

Class "RsparseMatrix" of Sparse Matrices in Row-compressed Form

all.equal-methods

Matrix Package Methods for Function all.equal()

Schur Factorizations

Construct Sparse Banded Matrix from (Sup-/Super-) Diagonals

Construct a Block Diagonal Matrix

Compute the Cholesky Factor of a Matrix

chol2inv-methods

Inverse from Cholesky Factor

dgRMatrix-class

Sparse Compressed, Row-oriented Numeric Matrices

dsCMatrix-class

Numeric Symmetric Sparse (column compressed) Matrices

(Virtual) Class "dMatrix" of "double" Matrices

Methods for Schur Factorization

TsparseMatrix-class

Class "TsparseMatrix" of Sparse Matrices in Triplet Form

CHMfactor-class

Sparse Cholesky Factorizations

ddiMatrix-class

Class "ddiMatrix" of Diagonal Numeric Matrices

Defunct Functions in Package Matrix

Matrix-deprecated

Deprecated Functions in Package Matrix

Standardize a Sparse Matrix in Triplet Format

Dense LU Factorizations

ddenseMatrix-class

Virtual Class "ddenseMatrix" of Numeric Dense Matrices

dgeMatrix-class

Class "dgeMatrix" of Dense Numeric (S4 Class) Matrices

diagonalMatrix-class

Class "diagonalMatrix" of Diagonal Matrices

Transform Triangular Matrices from Unit Triangular to General Triangular and Back

dgTMatrix-class

Sparse matrices in triplet form

dsRMatrix-class

Symmetric Sparse Compressed Row Matrices

Extract bands of a matrix

dtRMatrix-class

Triangular Sparse Compressed Row Matrices

Multiplication by Factors from Matrix Factorizations

Scale the Rows and Columns of a Matrix

dsparseMatrix-class

Virtual Class "dsparseMatrix" of Numeric Sparse Matrices

dtrMatrix-class

Triangular, dense, numeric matrices

“Low Level” Coercions and Methods

coerce-methods-SparseM

Sparse Matrix Coercion from and to those from package SparseM

Expand Matrix Factorizations

Matrix Exponential

lgeMatrix-class

Class "lgeMatrix" of General Dense Logical Matrices

coerce-methods-graph

Conversions "graph" <--> (sparse) Matrix

dtpMatrix-class

Packed Triangular Dense Matrices - "dtpMatrix"

lsparseMatrix-class

Sparse logical matrices

ldenseMatrix-class

Virtual Class "ldenseMatrix" of Dense Logical Matrices

ldiMatrix-class

Class "ldiMatrix" of Diagonal Logical Matrices

forceSymmetric-methods

Force a Matrix to 'symmetricMatrix' Without Symmetry Checks

dsyMatrix-class

Symmetric Dense (Packed or Unpacked) Numeric Matrices

externalFormats

Read and write external matrix formats

Formatting Sparse Numeric Matrices Utilities

indMatrix-class

dtCMatrix-class

Triangular, (compressed) sparse column matrices

generalMatrix-class

Class "generalMatrix" of General Matrices

Methods for image() in Package 'Matrix'

Are the Dimnames dn NULL-like ?

isTriangular-methods

Test whether a Matrix is Triangular or Diagonal

Dulmage-Mendelsohn Permutation / Decomposition

dpoMatrix-class

Positive Semi-definite Dense (Packed | Non-packed) Numeric Matrices

Virtual Class “index” of Index Vectors

Methods for LU Factorization

Utilities for Permutation Vectors

nsyMatrix-class

Symmetric Dense Nonzero-Pattern Matrices

ntrMatrix-class

Triangular Dense Logical Matrices

is.na(), is.finite() Methods for 'Matrix' Objects

isSymmetric-methods

Methods for Function 'isSymmetric' in Package 'Matrix'

Methods for QR Factorization

lsyMatrix-class

Symmetric Dense Logical Matrices

ndenseMatrix-class

Virtual Class "ndenseMatrix" of Dense Logical Matrices

Map Matrix to its Triplet Representation

kronecker-methods

Methods for Function 'kronecker()' in Package 'Matrix'

Rank of a Matrix

Nearest Positive Definite Matrix

ltrMatrix-class

Triangular Dense Logical Matrices

Permutation matrices

Sparse QR Factorizations

matmult-methods

Matrix (Cross) Products (of Transpose)

Class "rleDiff" of rle(diff(.)) Stored Vectors

Random Sparse Matrix

Class "nMatrix" of Non-zero Pattern Matrices

Representation of Packed and Unpacked Dense Matrices

packedMatrix-class

Virtual Class "packedMatrix" of Packed Dense Matrices

Format and Print Sparse Matrices Flexibly

Estimate the Reciprocal Condition Number

sparseMatrix-class

Virtual Class "sparseMatrix" --- Mother of Sparse Matrices

Replicate Vectors into 'abIndex' Result

symmpart-methods

Symmetric Part and Skew(symmetric) Part of a Matrix

triangularMatrix-class

Virtual Class of Triangular Matrices in Package Matrix

unpackedMatrix-class

Virtual Class "unpackedMatrix" of Unpacked Dense Matrices

General Sparse Matrix Construction from Nonzero Entries

nsparseMatrix-class

Sparse "pattern" Matrices

Methods in Package Matrix for Function solve

sparseVector-class

Sparse Vector Classes

Updating and Downdating Sparse Cholesky Factorizations

Sparse Matrix Constructor From Triplet

Sparse Vector Construction from Nonzero Entries

ngeMatrix-class

Class "ngeMatrix" of General Dense Nonzero-pattern Matrices

The Number of Non-Zero Values of a Matrix

sparse.model.matrix

Construct Sparse Design / Model Matrices

subassign-methods

Methods for "[<-" - Assigning to Subsets for 'Matrix'

Sparse LU Factorizations

subscript-methods

Methods for "[": Extraction or Subsetting in Package 'Matrix'

symmetricMatrix-class

Virtual Class of Symmetric Matrices in Package Matrix

Contiguity Matrix of World One-Degree Grid Cells