api-array-07: Array operations (2007)

In gRbase: A Package for Graphical Modelling in R

Array operations (2007)

Description

Array operations; created to facilitate the gRain package in 2007. Now largely replaceable by other (often faster) functions implemented in Rcpp.

Usage

tablePerm(tab, perm, resize = TRUE, keep.class = FALSE)

tableMult(tab1, tab2)

tableDiv(tab1, tab2)

tableOp(tab1, tab2, op = "*")

tableOp2(tab1, tab2, op = `*`, restore = FALSE)

tableOp0(tab1, tab2, op = `*`)

tableSlice(tab, margin, level, impose)

tableSlicePrim(tab, mar.idx, lev.idx)

tableMargin(tab, margin, keep.class = FALSE)

tableGetSliceIndex(tab, margin, level, complement = FALSE)

tableSetSliceValue(tab, margin, level, complement = FALSE, value = 0)

Arguments

tab, tab1, tab2	Arrays with named dimnames.
perm	A permutation; either indices or names.
resize	A flag indicating whether the vector should be resized as well as having its elements reordered (default TRUE).
keep.class	Obsolete argument.
op	The operation; choices are "*", "/", "+", "-".
restore	Not so clear anymore.
margin	Index or name of margin.
level	Corresponding level of margin.
impose	Value to be imposed.
mar.idx	Index of margin
lev.idx	Index of level
complement	Should values be set for the complement?
value	Which value should be set

Details

tableOp0 is brute force implementation based on dataframes. It is very slow, but useful for error checking.

gRbase documentation built on Sept. 22, 2023, 5:12 p.m.