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Density plot with optional grouping and faceting

Source: R/plot.R
plot_density.Rd

Create a univariate density plot with optional fill grouping and faceting. Density curves have a fixed black border; fill is controlled by group_col.

Usage

plot_density(
  data,
  x_col,
  group_col = NULL,
  facet_col = NULL,
  alpha = 0.7,
  adjust = 1,
  palette = NULL
)

Arguments

data

A data.frame.

x_col

Character. Column name of the numeric variable to plot.

group_col

Character or NULL. Column name for fill grouping. Default: NULL.

facet_col

Character or NULL. Column name for faceting. Default: NULL.

alpha

Numeric. Fill transparency [0, 1] (0 = fully transparent, 1 = fully opaque). Default: 0.7.

adjust

Numeric. Bandwidth adjustment multiplier. Default: 1.

palette

Character vector or NULL. Fill colors recycled to match the number of groups. If NULL, uses ggplot2 default colors. Default: NULL.

Value

A ggplot object.

Examples

plot_density(iris, x_col = "Sepal.Length", group_col = "Species")