Matrix (version 0.999375-2)

bdiag: Construct a Block Diagonal Matrix

Description

Build a block diagonal matrix given several building block matrices.

Usage

bdiag(...)

Arguments

...

individual matrices or a list of matrices.

Value

• A sparse matrix inheriting from class CsparseMatrix obtained by combining the arguments into a block diagonal matrix.

See Also

Diagonal for constructing matrices of class diagonalMatrix, or kronecker which also works for "Matrix" inheriting matrices.

Note that other CRAN packages have own versions of bdiag() which return traditional matrices.

Examples

bdiag(matrix(1:4, 2), diag(3))
## combine "Matrix" class and traditional matrices:
bdiag(Diagonal(2), matrix(1:3, 3,4), diag(3:2))

mlist <- list(1, 2:3, diag(x=5:3), 27, cbind(1,3:6), 100:101)
bdiag(mlist)

stopifnot(identical(bdiag(mlist),                    bdiag(lapply(mlist, as.matrix))))