Create subcortical atlas data

Creates a data object for subcortical brain atlases. Subcortical atlases use individual 3D meshes for each structure (e.g., hippocampus, amygdala).

Usage

ggseg_data_subcortical(geom = NULL, meshes = NULL, ...)

brain_data_subcortical(sf = NULL, meshes = NULL)

Arguments

geom

2D geometry for rendering, stored in the single geom slot: either an sf data.frame (columns label, view, geometry) or a brain_polygons data.frame (see sf_to_polygons()). The class of geom determines the rendering path used downstream.

meshes

data.frame with columns label and mesh (list-column). Each mesh is a list with:

• vertices: data.frame with x, y, z columns

• faces: data.frame with i, j, k columns (1-based triangle indices)

...

Captures a deprecated sf argument: if supplied it is converted to the polygon representation via sf_to_polygons() and a deprecation warning is issued. Prefer passing 2D geometry via geom.

sf

Deprecated. Pass 2D geometry via geom instead.

Value

An object of class c("ggseg_data_subcortical", "ggseg_atlas_data")

Examples

data <- ggseg_data_subcortical(
  meshes = data.frame(
    label = "hippocampus_left",
    mesh = I(list(list(
      vertices = data.frame(x = 1:10, y = 1:10, z = 1:10),
      faces = data.frame(i = 1:3, j = 2:4, k = 3:5)
    )))
  )
)