plot_density: plot_density: Univariate Density Plot (Fill Group, Black...

In evanverse: Utility Functions for Data Analysis and Visualization

plot_density: Univariate Density Plot (Fill Group, Black Outline)

Description

Create a density plot with group color as fill, and fixed black border for all curves.

Usage

plot_density(
  data,
  x,
  group = NULL,
  facet = NULL,
  palette = c("#1b9e77", "#d95f02", "#7570b3"),
  alpha = 0.7,
  base_size = 14,
  xlab = NULL,
  ylab = "Density",
  title = NULL,
  legend_pos = "right",
  adjust = 1,
  show_mean = FALSE,
  mean_line_color = "red",
  add_hist = FALSE,
  hist_bins = NULL,
  add_rug = FALSE,
  theme = "minimal"
)

Arguments

data	data.frame. Input dataset.
x	Character. Name of numeric variable to plot.
group	Character. Grouping variable for fill color. (Optional)
facet	Character. Faceting variable. (Optional)
palette	Character vector. Fill color palette, e.g. c("#FF0000","#00FF00","#0000FF"). Will be recycled as needed. Cannot be a palette name. Default: c("#1b9e77", "#d95f02", "#7570b3")
alpha	Numeric. Fill transparency. Default: 0.7.
base_size	Numeric. Theme base font size. Default: 14.
xlab	Character. X-axis label. Default: NULL (uses variable name).
ylab	Character. Y-axis label. Default: "Density".
title	Character. Plot title. Default: NULL.
legend_pos	Character. Legend position. One of "right", "left", "top", "bottom", "none". Default: "right".
adjust	Numeric. Density bandwidth adjust. Default: 1.
show_mean	Logical. Whether to add mean line. Default: FALSE.
mean_line_color	Character. Mean line color. Default: "red".
add_hist	Logical. Whether to add histogram layer. Default: FALSE.
hist_bins	Integer. Number of histogram bins. Default: NULL (auto).
add_rug	Logical. Whether to add rug marks at bottom. Default: FALSE.
theme	Character. ggplot2 theme style. One of "minimal", "classic", "bw", "light", "dark". Default: "minimal".

Value

ggplot object.

evanverse documentation built on March 10, 2026, 5:07 p.m.