plot_radar: Plot radar

In daltoolbox: Leveraging Experiment Lines to Data Analytics

Plot radar

Description

Radar (spider) chart for a single profile of variables using radial axes.

Usage

plot_radar(data, label_x = "", label_y = "", colors = NULL)

Arguments

data	two‑column data.frame: variable name and value
label_x	x‑axis label (unused; variable names are shown around the circle)
label_y	y‑axis label
colors	line/fill color for the polygon

Details

Expects a two‑column data.frame with variable names in the first column and numeric values in the second. The graphic is built as an n-sided polygon, where n is the number of variables, so at least three variables are required. The function already sets the drawing limits for the full polygon; adding ylim() or other Cartesian clipping after the fact can hide part of the radar.

Value

returns a ggplot2::ggplot graphic

Examples

data <- data.frame(name = "Petal.Length", value = mean(iris$Petal.Length))
data <- rbind(data, data.frame(name = "Petal.Width", value = mean(iris$Petal.Width)))
data <- rbind(data, data.frame(name = "Sepal.Length", value = mean(iris$Sepal.Length)))
data <- rbind(data, data.frame(name = "Sepal.Width", value = mean(iris$Sepal.Width)))

grf <- plot_radar(data, colors = "red")
plot(grf)

daltoolbox documentation built on May 14, 2026, 9:06 a.m.