genMatrixMult function

Generalized matrix multiplication

Computes a generalized matrix multiplication, where sum and product functions (elemet-wise and summary functions) can be replaced by arbitrary functions.

genMatrixMult(A, B, FUNelement = "*", FUNsummary = sum)

Arguments

• A: The first matrix.
• B: The second matrix.
• FUNelement: Element-wise operator.
• FUNsummary: Summary function.

Returns

A character vector or matrix.

Examples

# Operations can be anything
x <- matrix(letters[1:8], ncol = 2)
y <- matrix(1:10, nrow = 2)

genMatrixMult(x, y, FUNelement = paste,
FUNsummary = function(x) paste(x, collapse = "|"))

# Binary logic
set.seed(1)
x <- matrix(rbinom(8, size = 1, prob = 0.5) == 1, ncol = 2)
y <- matrix(rbinom(10, size = 1, prob = 0.5) == 1, nrow = 2)
genMatrixMult(x, y, FUNelement = "*", FUNsummary = any)

See Also

matmult

Author(s)