set_edges: Set region boundary edges
In ggseg3d: Interactive 3D Brain Atlas Visualization

set_edges

R Documentation

Set region boundary edges

Description

Adds coloured outlines around brain regions. This is useful for highlighting region boundaries in figures. Works with both htmlwidget ('ggseg3d') and rgl ('ggsegray') objects. For rgl, edges must have been computed at creation time via 'edge_by'.

Usage

set_edges(p, colour = "black", width = 1)

Arguments

`p`	A 'ggseg3d' widget or 'ggsegray' rgl object.
`colour`	string. Edge colour (hex or named color). Set to NULL to hide edges.
`width`	numeric. Width of edge lines (default: 1). Note: line width > 1 may not render on all systems due to WebGL limitations.

Value

The input object (modified), for piping.

Lifecycle

'r lifecycle::badge("experimental")'

Examples

## Not run: 
ggseg3d(hemisphere = "left", edge_by = "region") |>
  set_edges("black") |>
  pan_camera("left lateral")

ggsegray(hemisphere = "left", edge_by = "region") |>
  set_edges("red", width = 2) |>
  pan_camera("left lateral")

## End(Not run)

ggseg3d documentation built on Feb. 21, 2026, 1:06 a.m.