nxtomo 3.1.0.dev0

Package to create, load, edit, and save files following the NXtomo application definition.

The goal of the nxtomo project is to provide a powerful and user-friendly API to create, edit or read NXtomo application definition files.

pip install nxtomo

Add the optional extras when you need documentation or development tooling:

pip install nxtomo[doc,test]

Quick Start

Create a minimal NXtomo scan, populate detector data, and save it to disk:

import numpy as np
from pint import get_application_registry

from nxtomo.application.nxtomo import NXtomo
from nxtomo.nxobject.nxdetector import ImageKey

ureg = get_application_registry()

nx = NXtomo()
nx.title = "Demo scan"
nx.instrument.beam.incident_energy = 18 * ureg.keV

n_frames = 180
nx.instrument.detector.data = np.random.rand(n_frames, 64, 64).astype(np.float32)
nx.instrument.detector.image_key_control = np.full
    n_frames, ImageKey.PROJECTION.value, dtype=np.uint8
)
nx.sample.rotation_angle = np.linspace(0.0, 180.0, n_frames, endpoint=False) * ureg.degree

output_file = "demo_scan.nx"
nx.save(output_file, data_path="/entry0000")

loaded = NXtomo().load(output_file, data_path="/entry0000")
print(f"Energy: {loaded.energy}, Rotation angles: {loaded.sample.rotation_angle}")

Explore additional workflows in the tutorials, such as splitting large acquisitions or working with TIFF backends.

Documentation and Support

• Latest documentation: https://nxtomo.readthedocs.io/en/stable/index.html
• API reference: https://nxtomo.readthedocs.io/en/stable/api.html
• Report issues and follow development on GitLab: https://gitlab.esrf.fr/tomotools/nxtomo

Contributing

Contributions and feedback are welcome. Please open an issue or submit a merge request on GitLab. See the development guide in doc/development for details on setting up a local environment and running the test suite.

License

nxtomo is released under the MIT License. See LICENSE for the full text.