scale_brain_manual: Manual colour and fill scales for brain plots

In ggseg: Plotting Tool for Brain Atlases

Manual colour and fill scales for brain plots

Description

Apply a custom named colour palette to brain atlas plots. Use this when you want to override the atlas default colours with your own colour mapping.

Usage

scale_brain_manual(
  palette,
  na.value = "grey",
  ...,
  aesthetics = c("fill", "colour", "color")
)

scale_colour_brain_manual(...)

scale_color_brain_manual(...)

scale_fill_brain_manual(...)

Arguments

palette	Named character vector mapping region names to colours.
na.value	Colour for 'NA' entries (default: '"grey"').
...	Additional arguments (unused).
aesthetics	Which aesthetic to scale: '"fill"', '"colour"', or '"color"'.

Value

A ggplot2 scale object.

Examples

library(ggplot2)

pal <- c("insula" = "red", "precentral" = "blue")
ggplot() +
  geom_brain(atlas = dk(), aes(fill = region), show.legend = FALSE) +
  scale_fill_brain_manual(palette = pal)

ggseg documentation built on April 3, 2026, 5:06 p.m.