api-tabNew: Create multidimensional arrays
In DataSciBurgoon/gRbase: A Package for Graphical Modelling in R

Description Usage Arguments Details Value Author(s) Examples

Alternative ways of creating arrays

1	tabNew(names, levels, values, normalize = "none", smooth = 0)

`names`	Names of variables defining table; a character vector or a right hand sided formula.
`levels`	1) a list with specification of the levels of the factors in `names` or 2) a vector with number of levels of the factors in `names`. See 'examples' below.
`values`	values to go into the parray
`normalize`	Either "none", "first" or "all". Should result be normalized, see 'Details' below.
`smooth`	Should values be smoothed, see 'Details' below.

If normalize="first" then for each configuration of all other variables than the first, the probabilities are normalized to sum to one. Thus f(a,b,c) becomes a conditional probability table of the form p(a|b,c). If normalize="all" then the sum over all entries of f(a,b,c) is one.

If smooth is positive then smooth is added to values before normalization takes place.

An array.

Søren Højsgaard, sorenh@math.aau.dk

universe <- list(gender=c('male','female'),
                 answer=c('yes','no'),
                 rain=c('yes','no'))
t1 <- tabNew(c("gender","answer"), levels=universe, values=1:4)
t1
t2 <- tabNew(~gender:answer, levels=universe, values=1:4)
t2
t3 <- tabNew(~gender:answer, c(2,2), values=1:4)
t3