Changes in version 2.1.1 (2026-04-16)                  

  - Fix minor bug with ggproto

                 Changes in version 2.1.0 (2026-04-03)                  

  - Support cerebellar atlas type in 2D view stacking. Cerebellar
    atlases now use the same stacking layout as subcortical atlases in
    position_brain().

                 Changes in version 2.0.0 (2026-02-19)                  

This is a major release that simplifies the package architecture by
moving atlas data structures and utilities to the ggseg.formats package.

Breaking changes

  - ggseg() is now defunct and errors immediately. Use ggplot() +
    geom_brain() instead.

  - Atlas data (dk, aseg) is no longer bundled in ggseg. Atlases are now
    provided by ggseg.formats and re-exported as functions: dk(),
    aseg(), tracula(). Code using the bare objects (e.g., atlas = dk)
    must be updated to atlas = dk().

  - The following functions have been removed and are now in
    ggseg.formats: as_brain_atlas(), is_brain_atlas(), brain_atlas(),
    brain_regions(), brain_labels(), brain_pal(), brain_pals_info(),
    ggseg_atlas(), as_ggseg_atlas(), is_ggseg_atlas(),
    read_freesurfer_stats(), read_freesurfer_table(),
    read_atlas_files().

  - scale_brain2(), scale_fill_brain2(), scale_colour_brain2(), and
    scale_color_brain2() are deprecated in favour of
    scale_brain_manual(), scale_fill_brain_manual(),
    scale_colour_brain_manual(), and scale_color_brain_manual().

  - scale_brain(), scale_fill_brain(), scale_colour_brain(), and
    scale_color_brain() are deprecated. Atlas palettes are now applied
    automatically by geom_brain().

  - The side argument in geom_brain() and position_brain() has been
    renamed to view.

New features

  - New annotate_brain() function adds view labels (e.g., "left
    lateral") to brain plots, respecting the layout from
    position_brain().

  - New scale_brain_manual() family for applying custom named colour
    palettes to brain plots.

  - position_brain() gains nrow, ncol, and views arguments for
    grid-based layout control of subcortical and tract atlases.

  - adapt_scales() now accepts atlas objects directly (not just
    pre-converted coordinate data frames), and handles "tract" atlas
    types alongside subcortical.

  - geom_brain() now automatically applies the atlas colour palette when
    no fill aesthetic is mapped.

Improvements

  - Messaging uses cli for all user-facing output (brain_join() warnings
    and info messages).

  - Rewrote and reorganised all vignettes with updated examples and
    renamed files for cleaner URLs.

  - Added tracula (white matter tract) atlas as a re-export from
    ggseg.formats.

  - Improved documentation throughout with updated roxygen2 docs.

                         Changes in version 1.6                         

ggseg 1.6.8

  - Increased C++ standard to C++17 to comply with CRAN policies

ggseg 1.6.7

  - Fixed testthat issues with latest version of testthat
  - Fixed vignette build issues on CRAN
  - removed sf minimum version requirement

ggseg 1.6.5

  - Bump version to 1.6.5
  - rm freesurfer dep
  - rm old remnants
  - update readme img
  - switch cerebellum labels for wm, gm, fix #80
  - fix aseg labels to original, fix #78
  - add vis as categorical. fix #76
  - change aseg data class , fix #56
  - bump version, small CRAN fixes
  - add sysreq
  - fix axial to coronal in vignette
  - change axial to coronal in aseg data
  - re-add ggplot2 depends\n\n

1.6.4

  - Added options hemi and side to geom
  - improved position_brain() to accept character vector, and also
    support subcortical atlases
  - Altered axial to coronal in aseg atlas

1.6.3.01

  - fixed broken geom after changes to ggplot2 internals
  - fixed spelling mistakes in docs

ggseg 1.6.3

  - removed function to display ggseg palettes
  - preparations for CRAN submission
      - added examples to more functions
      - updated links

ggseg 1.6.02

  - bug fixes in atlas objects and method internals
  - tests in vdiffr
  - vctrs class for polygon ggseg data

ggseg 1.6.02

  - No longer depends on ggplot2, but imports it.
      - as is advised practice
      - users must explicitly load ggplot2 to access further ggplot2
        functions

ggseg 1.6.01

  - fixed installation issues by making sure package depends on R>3.3
    for polygon holes.

ggseg 1.6.00

New large update, many new features. Of particular note is the
introduction of the brain sf geom, which improved speed, and
adaptability of the plots.

  - ggseg() will stay for a while, but is superseded by a simple
    features geom
  - geom_brain introduced as a new function to plot the atlas data
      - an sf geom provides a lot of new features to the package
      - more control over display of the slices through position_brain()
      - improved capabilities for atlases with regions that have holes
  - new atlas class brain_atlas which contains simple features data
  - new functions to allow compatibility between sf and polygon data
  - utility functions to use on the atlas data for easy access to
    information
      - plot() functions for ggseg_atlas and brain_atlas classes for a
        quick look at atlases
      - brain_regions functions to easily extract the unique names of
        regions for an atlas
      - improved print method for atlases classes ggseg_atlas and
        brain_atlas

                        Changes in version 1.5.4                        

  - dkt renamed to dk
      - the dkt (Desikan-Killiany-Tourville) atlas is not yet available
  - atlas columns area renamed to region
      - to avoid confusion with the calculation of cortical/surface area
  - dk atlas region name "medial orbito frontal" changed to "medial
    orbitofrontal"

ggseg 1.5.3

  - Split ggseg, and ggseg3d into two different packages

ggseg 1.5.2

  - Adapted to work with dplyr 0.8.1

ggseg 1.5.1

  - Changed ggseg_atlas-class to have nested columns for easier viewing
    and wrangling

ggseg 1.5

  - Changed atlas.info to function atlas_info()

  - Changed brain.pal to function brain_pal()

  - Changed atlas.info to function atlas_info()

  - Reduced code necessary for brain_pals_info

  - Simplified display_brain_pal()

  - Moved palettes of ggsegExtra atlases to ggsegExtra package

  - Added a NEWS.md file to track changes to the package.

  - Added compatibility with grouped data.frames
  - Reduced internal atlases, to improve CRAN compatibility
  - Added function to install extra atlases from github easily
  - Changes vignettes to comply with new functionality

                         Changes in version 1.5                         

ggseg 1.5.5

  - dk atlas regions renamed to better reflect correct naming
      - pre central and post central are precentral and postcentral
  - dk atlas now also includes the corpus callosum, as the original
    atlas contains