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Pie chart from a vector or grouped data frame

Source: R/plot.R
plot_pie.Rd

Accepts either a character/factor vector (frequency counted automatically) or a data frame with pre-computed counts. Slices with zero count are dropped. At least two groups are required.

Usage

plot_pie(
  data,
  group_col = NULL,
  count_col = NULL,
  label = c("none", "count", "percent", "both"),
  palette = NULL
)

Arguments

data

A character/factor vector, or a data.frame.

group_col

Character. Column name for group labels (data.frame only).

count_col

Character. Column name for counts (data.frame only). Values must be non-negative.

label

Label type: "none", "count", "percent", or "both". Default: "none".

palette

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

Value

A ggplot object.

Examples

# From a vector
plot_pie(c("A", "A", "B", "C", "C", "C"))


# From a data frame
df <- data.frame(group = c("X", "Y", "Z"), count = c(10, 25, 15))
plot_pie(df, group_col = "group", count_col = "count", label = "percent")