countTables: Count Similarly Margined Contingency Tables

In algstat: Algebraic statistics in R

Description

Count the number of contingency tables with the same marginals as a given table.

Usage

countTables(table, margins = as.list(1:length(dim(table))), dir = tempdir(),
  opts = "", quiet = TRUE)

Arguments

table	the table of interest
margins	the margins to be fixed
dir	directory to place the files in, without an ending /
opts	options for count
quiet	show latte output

Details

countTables uses LattE's count function (via algstat's count function) to count the tables. In many cases, the number of such tables is enormous. In these cases, instead of giving back an integer countTables provides a character string with the integer in it; see examples.

Value

an integer

See Also

count

Examples

## Not run: 


data(politics)
countTables(politics)

data(handy)
countTables(handy)

data(HairEyeColor)
eyeHairColor <- margin.table(HairEyeColor, 2:1)
countTables(eyeHairColor)

library(gmp)
as.bigz(countTables(eyeHairColor))


# notice that even tables with small cells can have
# huge fibers
data(drugs)
countTables(drugs)

countTables(eyeHairColor, quiet = FALSE)




## End(Not run)

algstat documentation built on May 29, 2017, 10:34 p.m.