plot_groupedbar: Plot grouped bar

In daltoolbox: Leveraging Experiment Lines to Data Analytics

Plot grouped bar

Description

Grouped (side‑by‑side) bar chart for multiple series per category.

Usage

plot_groupedbar(data, label_x = "", label_y = "", colors = NULL, alpha = 1)

Arguments

data	data.frame with category in first column and series in remaining columns
label_x	x‑axis label
label_y	y‑axis label
colors	optional vector of fill colors, one per series
alpha	bar transparency (0–1)

Details

Expects a data.frame where the first column is the category (x) and the remaining columns are numeric series. Bars are grouped by series. Provide colors with length equal to the number of series to set fills.

Value

returns a ggplot2::ggplot graphic

Examples

#summarizing iris dataset
data <- iris |> dplyr::group_by(Species) |>
dplyr::summarize(Sepal.Length=mean(Sepal.Length), Sepal.Width=mean(Sepal.Width))
head(data)

#ploting data
grf <- plot_groupedbar(data, colors=c("blue", "red"))
plot(grf)

daltoolbox documentation built on Nov. 5, 2025, 7:09 p.m.