blockmatrix: Block Matrix
In gastonstat/blockberry: Wireframe for multiblock objects

Description Usage Arguments Details Value See Also Examples

blockmatrix creates a block-matrix from the given set of values
as.bmatrix attempts to turn its argument into a block-matrix
is.bmatrix tests if its argument is a (strict) block-matrix

  blockmatrix(data, rowparts = NULL, colparts = NULL,
    parts = NULL, dims = NULL)

  is.blockmatrix(x)

  as.blockmatrix(x, ...)

`data`	a matrix, a vector, or a blockvector
`rowparts`	vector of row partitions
`colparts`	vector of column partitions
`parts`	optional integer positive vector with the partitions
`dims`	optional integer positive vector with the block structure
`x`	an R object
`...`	additional arguments to be passed to `blockmatrix`

When data is a blockvector, the return blockmatrix is a column-block (i.e. vertical) matrix

An object of class "blockmatrix"

blockvector, matrix

# create a regular matrix
a = matrix(runif(20), 5, 4)

# convert 'a' into a block-matrix
A = blockmatrix(a, c(2, 3), c(2, 2))
A

# test if block-matrix
is.bmatrix(a)  # FALSE
is.bmatrix(A)  # TRUE

# generate a matrix
m = matrix(1:9, 3, 3)

# convert 'm' into a block-matrix (one block)
M = as.bmatrix(m, 3, 3)
M