sets (version 1.0-18)

outer: Outer Product of Sets (Tuples)

Description

Outer “product” of (g)sets (tuples).

Usage

set_outer(X, Y, FUN = "*", ..., SIMPLIFY = TRUE, quote = FALSE)
gset_outer(X, Y, FUN = "*", ..., SIMPLIFY = TRUE, quote = FALSE)
cset_outer(X, Y, FUN = "*", ..., SIMPLIFY = TRUE, quote = FALSE)
tuple_outer(X, Y, FUN = "*", ..., SIMPLIFY = TRUE, quote = FALSE)

Arguments

X, Y

Set (tuple) objects or vectors. If Y is omitted, X will be used instead. In this case, FUN can also be specified as Y for convenience.

FUN

A function or function name (character string).

SIMPLIFY

Logical. If TRUE and all return values of FUN are atomic and of length 1, the result will be an atomic matrix; otherwise, a recursive one (a list with dim attribute).

quote

logical indicating whether the character strings used for the row and column names of the returned matrix should be quoted.

…

Additional arguments passed to the FUN.

Details

This function applies FUN to all pairs of elements specified in X and Y. Basically intended as a replacement for outer for sets (tuples), it will also accept any vector for X and Y. The return value will be a matrix of dimension length(X) times length(Y), atomic or recursive depending on the complexity of FUN's return type and the SIMPLIFY argument.

See Also

set, tuple, outer.

Examples

# NOT RUN {
set_outer(set(1,2), set(1,2,3), "/")
X <- set_outer(set(1,2), set(1,2,3), pair)
X[[1,1]]
Y <- set_outer(set(1,2), set(1,2,3), set)
Y[[1,1]]
set_outer(2 ^ set(1,2,3), set_is_subset)

tuple_outer(pair(1,2), triple(1,2,3))
tuple_outer(1:5, 1:4, "^")
# }