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Voxcell is a small library to handle probability distributions that have a spatial component and to use them to build collection of cells in space.
Readme
This is a library to build circuits and atlases. It contains tools to handle
Region hierarchy tree
, such as the one available from the Allen Institute for Brain Science (AIBS)
: Mouse Brain Atlas Ontology's StructureGraph
(aka 1.json).Install from PyPI:
.. code-block:: bash
pip install voxcell
Or an editable install:
.. code-block:: bash
git clone https://github.com/BlueBrain/voxcell
cd voxcell
pip install -e .
To use the following examples, one must download an NRRD file and the Ontology Structure:
.. code-block:: bash
curl -o brain_regions.nrrd http://download.alleninstitute.org/informatics-archive/current-release/mouse_ccf/annotation/ccf_2017/annotation_100.nrrd
curl -o hierarchy.json http://api.brain-map.org/api/v2/structure_graph_download/1.json
One can open NRRD files, and perform operations on them:
.. code-block:: python
import voxcell
voxels = voxcell.VoxelData.load_nrrd('brain_regions.nrrd')
print(voxels.voxel_dimensions) # prints array([100., 100., 100.], dtype=float32)
One can also use the Atlas
object to load at both the atlas and the hierarchy:
.. code-block:: python
import numpy as np
from voxcell.nexus.voxelbrain import Atlas
atlas = Atlas.open('.')
brain_regions = atlas.load_data('brain_regions')
rm = atlas.load_region_map()
# count the number of voxels in the VIS region, and all its descendents
ids = rm.find('VIS', 'acronym', with_descendants=True)
np.count_nonzero(np.isin(brain_regions.raw, list(ids)))
When you use this software, we kindly ask you to cite the following DOI:
.. image:: https://zenodo.org/badge/451807050.svg :target: https://zenodo.org/badge/latestdoi/451807050
The development of this software was supported by funding to the Blue Brain Project, a research center of the École polytechnique fédérale de Lausanne (EPFL), from the Swiss government’s ETH Board of the Swiss Federal Institutes of Technology.
For license and authors, see LICENSE.txt and AUTHORS.txt respectively.
Copyright (c) 2022-2024 Blue Brain Project/EPFL
.. _Allen Institute for Brain Science (AIBS)
: https://alleninstitute.org/what-we-do/brain-science/
.. _Mouse Brain Atlas Ontology's StructureGraph
: http://api.brain-map.org/api/v2/structure_graph_download/1.json
FAQs
Voxcell is a small library to handle probability distributions that have a spatial component and to use them to build collection of cells in space.
We found that voxcell demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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