Sediments: Proportions of sand, silt and clay in sediments specimens

In compositions: Compositional Data Analysis

Proportions of sand, silt and clay in sediments specimens

Description

Data provide sand, silt and clay compositions of 21 sediments specimens, 10 of which are identified as offshore, 7 as near shore and 4 new samples.

Usage

data(Sediments)

Format

• sandnumeric: the portion of sand

• siltnumeric: the protion of silt

• claynumeric: the portion of clay

• typenumeric: 1 for offshore, 2 for near shore and 3 for new samples

Details

The data comprise 21 cases: 10 offshore, 7 near shore and 4 new samples, and 4 variables: sand, silt and clay proportions and in addition the type of sediments specimens – 1 for offshore, 2 for near shore and 3 for new samples.

All 3-part compositions sum to one.

Note

Courtesy of J. Aitchison

Source

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

References

Aitchison, J. (1986) The Statistical Analysis of Compositional Data, (Data 20) pp17.

compositions documentation built on April 14, 2023, 12:26 a.m.