Array operations (2007) — api-array-07 • gRbase

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

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.