chatcat {ade4} | R Documentation

## Qualitative Weighted Variables

### Description

This data set gives the age, the fecundity and the number of litters for 26 groups of cats.

### Usage

    data(chatcat)

### Format

`chatcat` is a list of two objects :

tab
  is a data frame with 3 factors (age, feco, nport).
eff
  is a vector of numbers.

### Details

One row of `tab` corresponds to one group of cats.
The value in `eff` is the number of cats in this group.

### Source

Pontier, D. (1984) Contribution à la biologie et à la génétique des populations de chats domestiques (Felis catus). Thèse de 3ème cycle. Université Lyon 1, p. 67.

### Examples

    data(chatcat)
    summary(chatcat$tab)
    w <- acm.disjonctif(chatcat$tab) #  Disjonctive table
    names(w) <- c(paste("A", 1:5, sep = ""), paste("B", 1:5, sep = ""),
        paste("C", 1:2, sep = ""))
    w <- t(w*chatcat$num)
    w <- data.frame(w)
    w # BURT table

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