R: Aitchison's Rock Data

Rocks {DirichletReg} | R Documentation

## Aitchison's Rock Data

### Description

A compilation of four datasets listed in Aitchison (2003)

Each type of rock has 25 observations – to use only a certain type of rock, see “Details”.

### Usage

    Rocks

### Format

A data frame with 100 observations on the following 8 variables.

`Albite`, `Blandite`, `Cornite`, `Daubite`, `Endite`

  numeric vectors

`depth`

  a numeric vector

`porosity`

  a numeric vector

`type`

  a factor with levels `Boxite` `Coxite` `Hongite` `Kongite`

### Source

Aitchison, J. (2003). The Statistical Analysis of Compositional Data. The Blackburn Press, Caldwell, NJ.

[Package DirichletReg version 0.7-0 Index]