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ggseg.formats

ggseg.formats provides the ggseg_atlas S3 class that powers the ggseg ecosystem for 2D and 3D brain visualisation. It ships three bundled atlases, a set of accessor functions for querying atlas contents, and a pipe-friendly manipulation API for subsetting, renaming, and enriching atlas objects.

Bundled atlases

The package includes three atlases covering the main atlas types:

• dk — Desikan-Killiany cortical parcellation (68 regions)
• aseg — FreeSurfer automatic subcortical segmentation
• tracula — TRACULA white matter tract atlas

library(ggseg.formats)

plot(dk())

plot(aseg())

plot(tracula())

Quick example

Atlas objects are designed for exploration and customisation. You can query regions, filter views, and pipe operations together:

aseg_small <- aseg() |>
  atlas_region_keep("hippocampus|amygdala|thalamus") |>
  atlas_view_keep("coronal_3|axial_3") |>
  atlas_view_gather()
plot(aseg_small)

Installation

Install from the ggsegverse r-universe:

options(repos = c(
    ggsegverse = 'https://ggsegverse.r-universe.dev',
    CRAN = 'https://cloud.r-project.org'))

install.packages('ggseg.formats')

Or install the development version from GitHub:

# install.packages("devtools")
devtools::install_github("ggseg/ggseg.formats")

Learn more

• vignette("ggseg.formats") — understanding atlas structure and accessors
• vignette("atlas-manipulation") — region, view, and metadata manipulation

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
Health stats visible at Monitor.