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Matrix (version 1.7-1)

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

107,780

Version

1.7-1

License

GPL (>= 2) | file LICENCE

Maintainer

Martin Maechler

Last Published

October 18th, 2024

Functions in Matrix (1.7-1)

The Matrix (Super-) Class of a Class

Virtual Classes Not Yet Really Implemented and Used

MatrixFactorization-class

Virtual Class "MatrixFactorization" of Matrix Factorizations

Matrix-deprecated

Deprecated Functions in Package Matrix

Defunct Functions in Package Matrix

Construct a Classed Matrix

Khatri-Rao Matrix Product

Virtual Class "Matrix" of Matrices

RsparseMatrix-class

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

Schur Factorizations

Methods for Schur Factorization

Class "abIndex" of Abstract Index Vectors

Contiguity Matrix of U.S. Counties

TsparseMatrix-class

Class "TsparseMatrix" of Sparse Matrices in Triplet Form

Sequence Generation of "abIndex", Abstract Index Vectors

Standardize a Sparse Matrix in Triplet Format

all.equal-methods

Matrix Package Methods for Function all.equal()

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

Extract bands of a matrix

Construct a Block Diagonal Matrix

chol2inv-methods

Inverse from Cholesky Factor

Compute the Cholesky Factor of a Matrix

colSums-methods

Form Row and Column Sums and Means

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

ddenseMatrix-class

Virtual Class "ddenseMatrix" of Numeric Dense Matrices

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

boolmatmult-methods

Boolean Arithmetic Matrix Products: %&% and Methods

coerce-methods-SparseM

Sparse Matrix Coercion from and to those from package SparseM

denseMatrix-class

Virtual Class "denseMatrix" of All Dense Matrices

dgRMatrix-class

Sparse Compressed, Row-oriented Numeric Matrices

dgCMatrix-class

Compressed, sparse, column-oriented numeric matrices

diagonalMatrix-class

Class "diagonalMatrix" of Diagonal Matrices

Scale the Rows and Columns of a Matrix

dgeMatrix-class

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

coerce-methods-graph

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

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

Drop Non-Structural Zeros from a Sparse Matrix

dsCMatrix-class

Numeric Symmetric Sparse (column compressed) Matrices

ddiMatrix-class

Class "ddiMatrix" of Diagonal Numeric Matrices

Transform Triangular Matrices from Unit Triangular to General Triangular and Back

Dense LU Factorizations

dgTMatrix-class

Sparse matrices in triplet form

Multiplication by Factors from Matrix Factorizations

dtRMatrix-class

Triangular Sparse Compressed Row Matrices

dtpMatrix-class

Packed Triangular Dense Matrices - "dtpMatrix"

dtrMatrix-class

Triangular, dense, numeric matrices

dsRMatrix-class

Symmetric Sparse Compressed Row Matrices

dsyMatrix-class

Symmetric Dense (Packed or Unpacked) Numeric Matrices

dtCMatrix-class

Triangular, (compressed) sparse column matrices

indMatrix-class

Virtual Class “index” of Index Vectors

Matrix Exponential

Dulmage-Mendelsohn Permutation / Decomposition

Methods for LU Factorization

Expand Matrix Factorizations

“Low Level” Coercions and Methods

Utilities for Permutation Vectors

matmult-methods

Matrix (Cross) Products (of Transpose)

dsparseMatrix-class

Virtual Class "dsparseMatrix" of Numeric Sparse Matrices

externalFormats

Read and write external matrix formats

Class "nMatrix" of Non-zero Pattern Matrices

dpoMatrix-class

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

nsparseMatrix-class

Sparse "pattern" Matrices

ldenseMatrix-class

Virtual Class "ldenseMatrix" of Dense Logical Matrices

Map Matrix to its Triplet Representation

ngeMatrix-class

Class "ngeMatrix" of General Dense Nonzero-pattern Matrices

generalMatrix-class

Class "generalMatrix" of General Matrices

forceSymmetric-methods

Force a Matrix to 'symmetricMatrix' Without Symmetry Checks

The Number of Non-Zero Values of a Matrix

ldiMatrix-class

Class "ldiMatrix" of Diagonal Logical Matrices

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

sparse.model.matrix

Construct Sparse Design / Model Matrices

lgeMatrix-class

Class "lgeMatrix" of General Dense Logical Matrices

Methods for QR Factorization

Formatting Sparse Numeric Matrices Utilities

Sparse LU Factorizations

Are the Dimnames dn NULL-like ?

Methods for image() in Package 'Matrix'

lsparseMatrix-class

Sparse logical matrices

nsyMatrix-class

Symmetric Dense Nonzero-Pattern Matrices

Rank of a Matrix

isTriangular-methods

Test whether a Matrix is Triangular or Diagonal

kronecker-methods

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

sparseMatrix-class

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

ntrMatrix-class

Triangular Dense Logical Matrices

lsyMatrix-class

Symmetric Dense Logical Matrices

isSymmetric-methods

Methods for Function 'isSymmetric' in Package 'Matrix'

General Sparse Matrix Construction from Nonzero Entries

Methods in Package Matrix for Function solve

Sparse QR Factorizations

Sparse Matrix Constructor From Triplet

Permutation matrices

sparseVector-class

Sparse Vector Classes

ndenseMatrix-class

Virtual Class "ndenseMatrix" of Dense Logical Matrices

ltrMatrix-class

Triangular Dense Logical Matrices

Contiguity Matrix of World One-Degree Grid Cells

Nearest Positive Definite Matrix

subscript-methods

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

Sparse Vector Construction from Nonzero Entries

subassign-methods

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

symmetricMatrix-class

Virtual Class of Symmetric Matrices in Package Matrix

Representation of Packed and Unpacked Dense Matrices

packedMatrix-class

Virtual Class "packedMatrix" of Packed Dense Matrices

Format and Print Sparse Matrices Flexibly

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

Estimate the Reciprocal Condition Number

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

Random Sparse Matrix

unpackedMatrix-class

Virtual Class "unpackedMatrix" of Unpacked Dense Matrices

Updating and Downdating Sparse Cholesky Factorizations

CHMfactor-class

Sparse Cholesky Factorizations

BunchKaufman-methods

Methods for Bunch-Kaufman Factorization

CsparseMatrix-class

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

Albers' example Matrix with "Difficult" Eigen Factorization

Koenker-Ng Example Sparse Model Matrix and Response Vector

Cholesky-methods

Methods for Cholesky Factorization

Generate a Hilbert matrix

Construct a Diagonal Matrix

BunchKaufman-class

Dense Bunch-Kaufman Factorizations

Dense Cholesky Factorizations