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Plot terrain PCA

Source: R/plotting.R
plot_process_pca.Rd

Plots the first two principal component score axes from terrain_pca().

Usage

plot_process_pca(
  pca,
  color_col = NULL,
  shape_col = NULL,
  label_loadings = TRUE,
  loading_arrows = TRUE,
  top_loadings = 3,
  axis_labels = c("loadings", "variance", "plain"),
  title = NULL,
  subtitle = NULL,
  caption = NULL
)

Arguments

pca

Output from terrain_pca().

color_col

Optional score metadata column used for point color.

shape_col

Optional score metadata column used for point shape.

label_loadings

Logical. Label the largest loading vectors.

loading_arrows

Logical. Draw loading arrows scaled into score space.

top_loadings

Number of high-magnitude loading vectors to draw or label.

axis_labels

Axis label style: include dominant loadings and variance, variance only, or plain component names.

title, subtitle, caption

Plot text.

Value

A ggplot object.

See also

terrain_pca()

Examples

if (requireNamespace("ggplot2", quietly = TRUE)) {
  df <- data.frame(a = rnorm(20), b = rnorm(20), c = rnorm(20))
  plot_process_pca(terrain_pca(df))
}