matrix_to_blocks: Split a matrix into blocks
In gastonstat/turner: Turn vectors and lists of vectors into indexed structures

Description Usage Arguments Value Author(s) See Also Examples

Split a matrix into a list of blocks (either by rows or by columns)

1	matrix_to_blocks(Matrix, blocks, byrow = TRUE)

`Matrix`	a matrix to split
`blocks`	either a list or a vector indicating the blocks. If `blocks` is a list of vectors, then the length of each vector defines the size of the blocks. If `blocks` is a vector, then each element represents the size of the blocks.
`byrow`	logical. If `TRUE` (the default) the matrix is split by rows, otherwise the matrix is split by columns

A list of matrices

Gaston Sanchez

lengths, listsize

# matrix with 10 rows and 7 columns
M = matrix(rnorm(70), 10, 7)

# row blocks
row_sets = list(1:3, 4:5, 6:10)

# split matrix by rows
matrix_to_blocks(M, row_sets)

# column blocks
col_sets = c(3, 4)

# split matrix by rows
matrix_to_blocks(M, col_sets, byrow=FALSE)