tidyspec (version 0.1.0)

spec_pca_screeplot: Scree plot for PCA results

Description

Creates a customizable scree plot based on a `prcomp` object showing variance explained by each component.

Usage

spec_pca_screeplot(
  pca,
  n = 10,
  show_labels = TRUE,
  show_cumulative = TRUE,
  bar_color = "steelblue",
  line_color = "darkred",
  show_kaiser = FALSE,
  title = "Scree Plot",
  subtitle = NULL,
  accuracy = 1
)

Value

A ggplot2 scree plot object.

Arguments

pca

A PCA object returned by [prcomp()].

n

Number of components to display. Defaults to 10.

show_labels

Logical. Show percentage labels on bars? Default is TRUE.

show_cumulative

Logical. Show cumulative variance line? Default is TRUE.

bar_color

Fill color for bars. Default is "steelblue".

line_color

Color of the cumulative line and points. Default is "darkred".

show_kaiser

Logical. Show Kaiser criterion line? Default is FALSE.

title

Plot title. Default is "Scree Plot".

subtitle

Optional plot subtitle.

accuracy

Number of decimal places for variance percentages. Default is 1.

Examples

pca <- prcomp(USArrests, scale. = TRUE)
spec_pca_screeplot(pca, n = 4)
spec_pca_screeplot(pca, show_kaiser = TRUE, bar_color = "darkblue")