R: Color-size compositions of 20 clam colonies from East Bay

ClamEast {compositions} | R Documentation

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

### Description

From East 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(ClamEast)

### Details

The data consist of 20 cases and 2x3 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 to one, except for rounding errors.

### Note

Courtesy of J. Aitchison

### Source

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

### References

Aitchison: The Statistical Analysis of Compositional Data, 1986, Data 14, pp18.

[Package compositions version 1.40-5 Index]