bCrosstab Create pairwise crosstabulation Cholesky-class Cholesky and Bunch-Kaufman Decompositions corrmatrix-class Class "corrmatrix" dCholCMatrix-class Cholesky Decompositions of dsCMatrix Objects dgBCMatrix-class Class "dgBCMatrix" Real Sparse Blocked Column Compressed Matrix dgCMatrix-class Compressed, sparse, column-oriented numeric matrices dgeMatrix-class General S4 Matrix class dgRMatrix-class Compressed, sparse, row-oriented numeric matrices dgTMatrix-class Sparse matrices in triplet form dMatrix-class (Virtual) Class "dMatrix" of "double" Matrices dpoMatrix-class Positive semi-definite, dense, numeric matrices dsCMatrix-class Symmetric, compressed, sparse column matrices dsparseMatrix-class Virtual Class "dsparseMatrix" of Numeric Sparse Matrices dsyMatrix-class Symmetric, dense matrices dtCMatrix-class Triangular, compressed, sparse column matrices dtpMatrix-class Packed triangular dense matrices dtrMatrix-class Triangular, dense, numeric matrices expand Expand a Decomposition into Factors expm Matrix exponential facmul Multiplication by Decomposition Factors Hilbert Generate a Hilbert matrix lsparseMatrix-class Sparse logical matrices lu Triangular Decomposition of a Square Matrix LU-class LU Matrix Decompositions Matrix Construct a Classed Matrix Matrix-class Virtual Class "Matrix" Class of Matrices [-methods Methods for "[": Extraction or Subsetting in Package 'Matrix'. mm A sample sparse model matrix norm Norm of a Matrix pdmatrix-class Positive-definite matrices pMatrix-class Permutation matrices rcond Estimate the Reciprocal Condition Number Schur Schur Decomposition of a Matrix sparseMatrix-class Virtual Class "sparseMatrix" -- Mother of Sparse Matrices tcrossprod Cross-product of transpose unpack Full Storage Representation of Packed Matrices y A sample response vector