barrel_prepare: Prepare ordination object for barrel plotting

In barrel: Covariance-Based Ellipses and Annotation Tools for Ordination Plots

Prepare ordination object for barrel plotting

Description

Attaches sample metadata (e.g., grouping variable) to a vegan ordination object and assigns class 'barrel_ord'.

Usage

barrel_prepare(ord, metadata)

Arguments

ord	A vegan ordination object (e.g., from rda, cca, metaMDS).
metadata	A data frame of sample metadata. Must have same number of rows as ordination site scores.

Value

The ordination object with metadata attached and class "barrel_ord".

Examples

library(vegan)
data(dune)
data(dune.env)
ord <- rda(dune, scale = TRUE)
ord_prepared <- barrel_prepare(ord, dune.env)
class(ord_prepared)

barrel documentation built on Nov. 5, 2025, 7:40 p.m.