ClamWest {compositions} | R Documentation

## Color-size compositions of 20 clam colonies from West Bay

### Description

From West Bay, 20 clam colonies were randomly selected, and from each a sample of clams were taken. Each sample was sieved into three size ranges, large, medium, and small. Then each size range was sorted by the shale colour, dark or light.

### Usage

    data(ClamWest)

### Details

The data consist of 20 cases and $2times 3$ variables denoted:

| dl | portion of dark large clams,
| dm | portion of dark medium clams,
| ds | portion of dark small clams,
| ll | portion of light large clams,
| lm | portion of light medium clams,
| ls | portion of light small clams.

All 6-part compositions sum up to one.

### Source

Aitchison: CODA microcomputer statistical package, 1986, the file name CLAMWEST.DAT, here included under the GNU Public Library Licence Version 2 or newer.

### References

Aitchison: The Statistical Analysis of Compositional Data, 1986, Data 15, pp17.

[Package compositions version 0.91-6 Index]