S4 classes to represent log-ratio data transformations.

## Slots

`totals`

A

`numeric`

vector to store the absolute row sums (before the closure of the compositions).`codes`

A

`character`

vector to store the laboratory codes (unique identifiers).`samples`

A

`character`

vector to store the sample identifiers (allows duplicates in case of repeated measurements).`groups`

A

`character`

vector to store the group names (if any).`parts`

A

`character`

vector to store the part names.`ratio`

A

`character`

vector to store the ratio names.`order`

An

`integer`

vector to store the original ordering of the columns.`base`

A

`numeric`

matrix to store the basis of the transformation.`weights`

A

`numeric`

vector to store the weights assigned to the respective log-ratios.

## Note

These classes inherit from `matrix`

.