R: Convert Contingency Table of Wins to Binomial Counts

countsToBinomial {BradleyTerry2} | R Documentation

## Convert Contingency Table of Wins to Binomial Counts

### Description

Convert a contingency table of wins to a four-column data frame containing the number of wins and losses for each pair of players.

### Usage

    countsToBinomial(xtab)

### Arguments

`xtab` | a contingency table of wins cross-classified by “winner” and “loser”

### Value

A data frame with four columns

`player1` | the first player in the contest.
`player2` | the second player in the contest.
`win1` | the number of times `player1` won.
`win2` | the number of times `player2` won.

### Author(s)

Heather Turner

### See Also

`BTm`

### Examples

    ########################################################
    ##  Statistics journal citation data from Stigler (1994)
    ##  -- see also Agresti (2002, p448)
    ########################################################
    citations

    ## Convert frequencies to success/failure data
    citations.sf <- countsToBinomial(citations)
    names(citations.sf)[1:2] <- c("journal1", "journal2")
    citations.sf

[Package BradleyTerry2 version 1.0-6 Index]