tsyganenko 2020.2.1

A Python wrapper for N A Tsyganenko’s field-line tracing routines.

tsyganenko

A Python wrapper for N. A. Tsyganenko’s field-line tracing routines.

For information on the models and routines that are wrapped by this package, please visit Empirical Magnetosphere Models by N. A. Tsyganenko.

Citation

When using this software, please cite the Zenodo record as well as citing the relevant papers.

Copyright

Geopack and the other Fortran code in this repository are developed by N A Tsyganenko et al. and licenced under the GPL v3 or later.

The Python wrappers were originally written by Sebastien de Larquier in 2012. They are now maintained by John C Coxon. Small edits have been made to Geopack-2008.for to allow for f2py compilation. Code in this repository other than the original Fortran is licenced under the MIT licence.

Funding

John C Coxon was supported during this work by Science and Technology Facilities Council (STFC) Consolidated Grants ST/R000719/1 and ST/V000942/1, and Ernest Rutherford Fellowship ST/V004883/1.

Installation

pip install tsyganenko
pytest tests/test.py

Please note that at this time, Windows is not well-supported by this package; if you would like to help resolve this, please check out issue #15.

Tests take around 1 hour to run, so don’t be alarmed if you see this behaviour on your machine.

The tests are run against the csv files in the repository which were created on an Apple Silicon (M1) Mac. Compiling the package on other machines leads to disparities which reflect the change in underlying architecture rather than reflecting changes in code. As such, by default, tests.py is extremely permissive; it will test to a relative accuracy of 0.5 or an absolute accuracy of 10.0. If you want to run tests with the pytest defaults, run pytest tests/test_exact.py, and expect a large number of tests to fail unless you are running on an M1 chip.

Usage

To use this module, simply follow the example provided in the Trace object docstring.

from tsyganenko.trace import Trace
help(Trace)

Alternatively, there are example notebooks provided which can be used to explore what this module can do:

cd notebooks
jupyter notebook