gRbase (version 2.0.3)

api-pct-operations: Array algebra

Description

Addition, subtraction etc. of arrays

Usage

a1 %a+% a2
a1 %a-% a2
a1 %a*% a2
a1 %a/% a2
a1 %a/0% a2
tab1 %a_% marg
tab1 %a==% tab2
tab1 %a^% extra
tab1 %aperm% perm
tab1 %aalign% tab2
tab1 %aslice% slice
tab1 %aslice*% slice
tab1 %amarg% marg

Arguments

tab1, tab2

Multidimensional arrays with named dimnames (we call them 'named arrays').

marg

A vector of indices or dimnames or a right hand sided formula giving the desired marginal.

extra

List defining the extra dimensions.

perm

A vector of indices or dimnames or a right hand sided formula giving the desired permutiation.

slice

A list of the form name=value.

a, a1, a2

Arrays (with named dimnames)

Author

Søren Højsgaard,

Examples

hec <- HairEyeColor
a1 <- tabMarg(hec, c("Hair", "Eye"))
a2 <- tabMarg(hec, c("Hair", "Sex"))
a3 <- tabMarg(hec, c("Eye", "Sex"))

## Binary operations
a1 %a+% a2
a1 %a-% a2
a1 %a*% a2
a1 %a/% a2