blodiag function

Block diagonal matrix

Split a vector x into a block diagonal matrix.

blodiag(x, blo)

Arguments

• x: A vector of length n.
• blo: A vector of positive integers such that sum(blo) == n.

Returns

A block-diagonal matrix with as many row as elements of blo and n columns. The vector x is split into length(blo) sub-vectors and these are the blocks of the resulting matrix.

Author(s)

Giovanni M. Marchetti

See Also

blkdiag, diag

Examples

blodiag(1:10, blo = c(2, 3, 5)) 
blodiag(1:10, blo = c(3,4,0,1))