PCA score plot coloured by food group — plot_pca • thali

Labels the foods furthest from the origin in each group using ggrepel.

Usage

plot_pca(
  pca_result,
  pc_x = 1L,
  pc_y = 2L,
  n_label = 2L,
  label_fn = .short_label,
  title = NULL
)

Arguments

pca_result: List from run_pca().
pc_x, pc_y: PC axes to plot (default 1 and 2).
n_label: Foods per group to label (default 2).
label_fn: Function to shorten food names.
title: Plot title.

Value

A ggplot2 object.

Examples

pca <- run_pca("amino_acids")
plot_pca(pca)
#> Warning: Removed 3 rows containing missing values or values outside the scale range
#> (`geom_label_repel()`).