Tubb

A dataframe with the major oxide composition of pottery found at Romano-British kiln sites in Wales,
Gloucester and the New Forest as determined by atomic absorption.

datasets

Provides functions for multivariate analysis with compositional data. Includes a function for doing compositional canonical correlation analysis. This analysis requires two data matrices of compositions, which can be adequately transformed and used as entries in a specialized program for canonical correlation analysis, that is able to deal with singular covariance matrices. The methodology is described in Graffelman et al. (2017) <doi:10.1101/144584>. Functions for log-ratio principal component analysis with condition number computations and log-ratio discriminant analysis have been added to the package.

Jan Graffelman

ToolsForCoDa

Multivariate Tools for Compositional Data Analysis

Tubb function

A data frame with 48 observations on the following 11 variables.<dl>
 <dt><code>Sample</code></dt>
<dd>Sample identifier</dd> <dt><code>Al2O3</code></dt>
<dd>Aluminium oxide</dd> <dt><code>Fe2O3</code></dt>
<dd>Iron (III) oxide</dd> <dt><code>MgO</code></dt>
<dd>Magnesium oxide</dd> <dt><code>CaO</code></dt>
<dd>Calcium oxide</dd> <dt><code>Na2O</code></dt>
<dd>Sodium oxide</dd> <dt><code>K2O</code></dt>
<dd>Potassium oxide</dd> <dt><code>TiO2</code></dt>
<dd>Titaniium dioxide</dd> <dt><code>MnO</code></dt>
<dd>Manganese oxide</dd> <dt><code>BaO</code></dt>
<dd>Barium oxide</dd> <dt><code>site</code></dt>
<dd>Geographical region of the sample. G=Gloucester, NF=New Forest, W=Wales.</dd> 
</dl>

Format

Romano-British pottery oxides — Tubb

A data frame with 48 observations on the following 11 variables.<dl>
 <dt><code>Sample</code></dt>
<dd>Sample identifier</dd>

 <dt><code>Al2O3</code></dt>
<dd>Aluminium oxide</dd>

 <dt><code>Fe2O3</code></dt>
<dd>Iron (III) oxide</dd>

 <dt><code>MgO</code></dt>
<dd>Magnesium oxide</dd>

 <dt><code>CaO</code></dt>
<dd>Calcium oxide</dd>

 <dt><code>Na2O</code></dt>
<dd>Sodium oxide</dd>

 <dt><code>K2O</code></dt>
<dd>Potassium oxide</dd>

 <dt><code>TiO2</code></dt>
<dd>Titaniium dioxide</dd>

 <dt><code>MnO</code></dt>
<dd>Manganese oxide</dd>

 <dt><code>BaO</code></dt>
<dd>Barium oxide</dd>

 <dt><code>site</code></dt>
<dd>Geographical region of the sample. G=Gloucester, NF=New Forest, W=Wales.</dd>

 
</dl>

Tubb: Romano-British pottery oxides

Description

Usage

Arguments

Format

References

Examples