as_graph: Graph of Log-ratios

In nexus: Sourcing Archaeological Materials by Chemical Composition

Graph of Log-ratios

Description

Produces a graph of log-ratios.

Usage

as_graph(object, ...)

## S4 method for signature 'LR'
as_graph(object)

## S4 method for signature 'ALR'
as_graph(object)

## S4 method for signature 'ILR'
as_graph(object)

Arguments

object	A LogRatio object.
...	Currently not used.

Value

An igraph graph object.

Author(s)

N. Frerebeau

See Also

Other plot methods: barplot(), hist(), plot(), plot_logratio

Examples

if (requireNamespace("igraph", quietly = TRUE)) {

library(igraph)

## Data from Aitchison 1986
data("hongite")

## Coerce to compositional data
coda <- as_composition(hongite)

## Pairwise log-ratio
lr <- transform_lr(coda)
lr_graph <- as_graph(lr)
plot(lr_graph)

## Additive log-ratio
alr <- transform_alr(coda)
alr_graph <- as_graph(alr)
plot(alr_graph)

## Isometric log-ratio
ilr <- transform_ilr(coda)
ilr_graph <- as_graph(ilr)
plot(ilr_graph)

plr <- transform_plr(coda)
plr_graph <- as_graph(plr)
plot(plr_graph)

}

nexus documentation built on Sept. 11, 2024, 6:43 p.m.