api_tabSlice: Array slices

In hojsgaard/gRbase: A Package for Graphical Modelling in R

Array slices

Description

Functions for extracting slices of arrays

Usage

tabSlice(
  tab,
  slice = NULL,
  margin = names(slice),
  drop = TRUE,
  as.array = FALSE
)

tabSlice2(tab, slice, margin.idx, drop = TRUE, as.array = FALSE)

tabSlicePrim(tab, slice, drop = TRUE)

tabSliceMult(tab, slice, val = 1, comp = 0)

tabSlice2Entries(tab, slice, complement = FALSE)

Arguments

tab	An array with named dimnames.
slice	A list defining the slice.
margin	Names of variables in slice.
drop	If TRUE then dimensions with only one level will be dropped from the output.
as.array	If the resulting array is one-dimensional the result will by default be a vector with no dim attribute unless as.array is TRUE.
margin.idx	Indec of variables in slice.
val	The values that entries in the slice will be multiplied with.
comp	The values that entries NOT in the slice will be multiplied with.
complement	If TRUE the complement of the entries are returned.

Author(s)

Søren Højsgaard, [e-mail]

Examples

x = HairEyeColor
s = list(Hair=c("Black", "Brown"), Eye=c("Brown", "Blue"))

s1 = tabSlice(x, slice=s); s1

tabSlice2Entries(x, slice=s)
tabSlice2Entries(x, slice=s, complement=TRUE)

## tabSliceMult 
s2 = tabSliceMult(x, slice=s); s2

sp = list(c(1,2), c(1,2), TRUE)
tabSlicePrim(x, slice=sp)
tabSlice(x, slice=s)

hojsgaard/gRbase documentation built on Jan. 10, 2024, 9:40 p.m.