LogRatio-class: Log-Ratio Matrix

In nexus: Sourcing Archaeological Materials by Chemical Composition

Log-Ratio Matrix

Description

S4 classes to represent log-ratio data transformations.

Usage

is_logratio(object)

Arguments

object

A LogRatio object.

Slots

totals

A numeric vector to store the absolute row sums (before the closure of the compositions).

parts

A character vector to store the original 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.

Coerce

In the code snippets below, x is a LogRatio object.

as.data.frame(x)

Coerces to a data.frame.

Note

These classes inherit from matrix.

Author(s)

N. Frerebeau

See Also

transform_lr(), transform_clr(), transform_alr(), transform_ilr(), transform_plr()

Other classes: CompositionMatrix-class, GroupedComposition-class, GroupedLogRatio-class, NumericMatrix-class, OutlierIndex-class, ReferenceGroups-class

nexus documentation built on June 8, 2025, 11:12 a.m.