dewlap_biplot: Dewlap color space biplot
In rscherrer/sagreicolor:

Description Usage Arguments Value Author(s)

This function plots individual dewlaps in the color space defined by principal components based on reflectance. It can plot each individual lizard, or centroids of habitats per island.

1 2	dewlap_biplot(pca, groups, i = 2, j = 3, plotCentroids = T, whatLegend = "habitat")

`pca`	A `prcomp` object.
`groups`	A data frame containing information about island and habitat for each lizard.
`i, j`	Which components to plot against each other? Defaults to i = 2 and j = 3.
`plotCentroids`	Logical. Whether to plot habitat and island centroids (T, default) or all observations (F).
`whatLegend`	A character vector. What legend to display? If contains "island", the legend of colors for island will be displayed in the top-left corner. If contains "habitat", the legend of shapes for habitats will be displayed in the bottom right corner. "n" if legend should not be plotted.