Render a brain atlas with default snapshot styling

Builds a minimal, deterministic plot of a ggseg_atlas: every region filled by its label, no legend, and ggplot2::theme_void(). This is the canonical construction used across the ggsegverse for visual-regression (vdiffr) snapshots, so that every atlas is rendered the same way and a stray legend, axis, or title cannot creep into a snapshot. It doubles as a quick way to preview an atlas.

Usage

brain_test_plot(
  atlas,
  position = position_brain(hemi ~ view),
  na.value = "grey"
)

Arguments

atlas: A ggseg_atlas object, such as dk() or aseg().
position: A ggplot2 position adjustment arranging the brain views. Defaults to position_brain(hemi ~ view).
na.value: Fill colour for regions with no palette entry. Defaults to "grey".

Value

A ggplot2::ggplot() object.

Details

The atlas palette is applied with ggplot2::scale_fill_manual() when it is present; atlases without a palette fall back to the default ggplot2 fill scale.

Examples

brain_test_plot(dk())