Copyright and license information for freesurferformats and its optional data files
======================================================================================

This file documents the ownership of copyright and intellectual property of
all components of the freesurferformats package, including the optional data files
that can be downloaded at runtime via download_opt_data(). It is provided in
compliance with the CRAN Repository Policy
(https://cran.r-project.org/web/packages/policies.html).


1. Package code
---------------

The freesurferformats package code is (c) Tim Schaefer, and is licensed under the
MIT license. See the files 'LICENSE' and 'LICENSE_FULL' for details.


2. Demo data downloaded by download_opt_data(): subjects_dir/subject1
---------------------------------------------------------------------

The demo subject data ('subjects_dir/subject1', including the mri/, surf/,
label/, and ext/ subdirectories) was created by Tim Schaefer, the author of
freesurferformats, using FreeSurfer. It is the author's own data and carries no
third-party copyright. It is provided for testing, examples, and the vignette.


3. CIFTI-2 example data downloaded by download_opt_data(): cifti/
-----------------------------------------------------------------

The files 'Conte69.L.inflated.32k_fs_LR.surf.gii',
'Conte69.R.inflated.32k_fs_LR.surf.gii', and
'Conte69.MyelinAndCorrThickness.32k_fs_LR.dscalar.nii' are part of the official
CIFTI-2 example dataset provided by the CIFTI Connectivity File Format project on
NITRC (https://www.nitrc.org/projects/cifti/). The example dataset is provided
under the Open Data Commons Public Domain Dedication and Licence (PDDL 1.0), see
http://opendatacommons.org/licenses/pddl/1.0/. The Conte69 surface template
contained in these files was created by the Van Essen Lab (Washington University
School of Medicine) as part of the Human Connectome Project (HCP); see the HCP
Open Access Data Use Terms (https://www.humanconnectome.org/license).

Please cite:

  * Van Essen DC, et al. The WU-Minn Human Connectome Project: An overview.
    NeuroImage 2013;80:62-79.


4. MNI152 template downloaded by download_opt_data(): nifti2/
-------------------------------------------------------------

The file 'avg152T1_LR_nifti2.nii.gz' is a NIfTI-2 conversion of the MNI152
('avg152T1') 1mm T1-weighted average brain template. The MNI152 template
originates from the Montreal Neurological Institute (MNI) / ICBM project and is
widely redistributed (e.g., as part of FSL and SPM) for non-commercial research
use. The NIfTI-2 variant distributed here is a derived conversion prepared for
testing the NIfTI-2 reader.


5. MRtrix3 test data downloaded by download_opt_data(): dwi/
------------------------------------------------------------

The files 'tracks.tck' and 'tracks.tsf' are synthetic tractography test data in
the MRtrix3 track (TCK) and track scalar (TSF) file formats. They were generated
with MRtrix3 (https://www.mrtrix3.org/) and contributed to freesurferformats via
pull request #36 (https://github.com/dfsp-spirit/freesurferformats/pull/36)
under the package's MIT license. They do not contain any third-party image data.
The TCK/TSF file format is defined by the MRtrix3 project (J-Donald Tournier et
al.) and is described at
https://mrtrix.readthedocs.io/en/latest/getting_started/image_data.html.

Please cite:

  * Tournier JD, et al. MRtrix3: A fast, flexible and open software framework for
    medical image processing and visualisation. NeuroImage 2019;202:116137.


6. Trademarks
-------------

'FreeSurfer', 'Conte69', 'HCP', 'MNI' and 'MRtrix3' are names, marks, or project
names of their respective owners. Their use here is factual and does not imply
endorsement by, or affiliation with, the respective owners.


7. Availability
---------------

None of the optional data files described above are part of the freesurferformats
package itself. They are downloaded on demand from a public web server
(https://rcmd.org/projects/nitestdata/) or from the GitHub release
(https://github.com/dfsp-spirit/freesurferformats/releases/tag/nitestdata-v1)
into a local package file cache managed by the 'pkgfilecache' package. Users must
comply with the respective licenses of the data they download.