chaosmagpy - ChaosMagPy v0.15

Version 0.15

Date: July 4, 2025 Release: v0.15

News

Starting with CHAOS-8.3, the model of the ionospheric E-layer field can be evaluated directly in ChaosMagPy (see chaosmagpy.chaos.CHAOS.synth_values_ion) by simply loading the MAT-file. However, this requires the installation of the optional package Apexpy.

Features

• Updated built-in RC-index file to RC1997-2025June25v6allLT.dat (used during the construction of CHAOS-8.3).
• Added method to evaluate the ionospheric E-layer field chaosmagpy.chaos.CHAOS.synth_values_ion.

Full Changelog: https://github.com/ancklo/ChaosMagPy/compare/v0.14...v0.15

- Python
Published by ancklo 8 months ago

chaosmagpy - ChaosMagPy v0.14

Version 0.14

Date: June 21, 2024 Release: v0.14

News

At the moment, only Numpy <= 1.26 is supported due to a deprecation affecting a ChaosMagPy dependency. This will hopefully be fixed soon.

Features

• Updated RC-index file to RC1997-2024June24_v5.dat (used during the construction of CHAOS-7.18).
• Increased precision of chaosmagpy.data_utils.timestamp and chaosmagpy.data_utils.mjd2000 to nanosecond.
• Added function to compute the unit base vector in the direction of the geomagetic north pole: chaosmagpy.coordinate_utils.dipole_to_vec.

- Python
Published by ancklo over 1 year ago

chaosmagpy - ChaosMagPy v0.13.1

Version 0.13.1

Date: June 4, 2024 Release: v0.13.1

Features

• Made Matplotlib an optional dependency of ChaosMagPy.
• Added optional dependencies to pyproject.toml.

Bugfixes

• Removed deprecated matplotlib call to register a colormap. The previous version caused an ImportError with matplotlib >=3.9.

- Python
Published by ancklo over 1 year ago

chaosmagpy - ChaosMagPy v0.13

Version 0.13

Date: January 31, 2023 Release: v0.13

Features

• Updated RC-index file to RC1997-2023Dec23_v5.dat (used during the construction of CHAOS-7.17).
• Extended chaosmagpy.coordinate_utils.geo_to_gg and chaosmagpy.coordinate_utils.gg_to_geo to also allow for the rotation of vector components.
• Removed Cartopy from the dependencies (basic map projections are done with Matplotlib and coastlines are loaded from Natural Earth). New dependency for reading the coastline shapefile is PyShp (>=2.3.1).
• Added function chaosmagpy.chaos.load_IGRF_txtfile to load the IGRF model from the coefficient TXT-file.

- Python
Published by ancklo about 2 years ago

chaosmagpy - ChaosMagPy v0.12

Version 0.12

Date: April 27, 2023 Release: v0.12

Features

• Updated RC-index file to RC1997-2023Febv8Dst_mod.dat (used during the construction of CHAOS-7.14).
• Plotting function do not return figure and axes handles any more. If needed, they can be accessed through matplotlib's gcf() and gca().
• Added function chaosmagpy.model_utils.sensitivity to compute the sensitivity of spherical harmonic coefficients.
• Changed the default colormap for the component maps to 'PuOr_r' (orange for positive values and purple for negative ones).

Bugfixes

• Fixed error in chaosmagpy.data_utils.load_shcfile when reading single piece, quadratic splines. Error was due to a failure to identify the shc-parameter line as the first non-comment line in the file.
• Fixed KeyError that is raised when no name is given to the chaosmagpy.chaos.CHAOS constructor. This only affected direct calls to the constructor due to an outdated config keyword.

- Python
Published by ancklo almost 3 years ago

chaosmagpy - ChaosMagPy v0.11

Version 0.11

Date: September 29, 2022 Release: v0.11 Version of CHAOS: CHAOS-7.12 (0712)

Features

• Updated RC-index file to RC1997-2022Sept_v3.dat.
• Improved time conversion paragraph in the usage section.
• Added option to chaosmagpy.coordinate_utils.sh_analysis to increase the grid size for the numerical integration.
• Made time conversion functions (chaosmagpy.data_utils.mjd2000, chaosmagpy.data_utils.timestamp, chaosmagpy.data_utils.dyear_to_mjd, chaosmagpy.data_utils.mjd_to_dyear) directly available upon import.
• Extended chaosmagpy.model_utils.power_spectrum to accept NumPy style axis keyword argument, and added new tests for this function.
• Added more detailed error message when requesting near-magnetospheric coefficients outside the domain covered by the RC-index file.
• Added input parameters rc_e and rc_i to the model call method.

- Python
Published by ancklo over 3 years ago

chaosmagpy - ChaosMagPy v0.10

Version 0.10

Date: July 1, 2022 Release: v0.10 Version of CHAOS: CHAOS-7.11 (0711)

Features

• Updated RC-index file to RC1997-2022June_v3.

- Python
Published by ancklo over 3 years ago

chaosmagpy - ChaosMagPy v0.9

Version 0.9

Date: April 1, 2022 Release: v0.9 Version of CHAOS: CHAOS-7.10 (0710)

Features

• Updated RC-index file to RC1997-2022Feb_v3.
• Changed the default leap year setting when loading/saving shc-files using the model classes to leap_year=False.
• Added function chaosmagpy.chaos.load_CALS7K_txtfile to read the CALS7K coefficients file.
• Function chaosmagpy.model_utils.design_gauss now accepts multidimensional shapes of input grids and preserves them in the output.
• Added new method chaosmagpy.chaos.Base.to_ppdict, which returns a dictionary of the pp-form compatible with MATLAB.
• Added support for calibration parameters.
• Renamed "params.version" in basicConfig to "params.CHAOS_version".

Bugfixes

• Functions chaosmagpy.data_utils.dyear_to_mjd and chaosmagpy.data_utils.mjd_to_dyear now correctly convert negative decimal years and negative modified Julian dates (erroneous offset of 1 day due to rounding to integer values).

- Python
Published by ancklo almost 4 years ago

chaosmagpy - ChaosMagPy v0.8

Version 0.8

Date: December 9, 2021 Release: v0.8 Version of CHAOS: CHAOS-7.9 (0709)

Features

• Updated RC-index file to RC1997-2021November_v3.
• Added ability to compute field components at the geographic poles.
• Removed cdot from SV, SA units in chasomagpy.data_utils.gauss_units.
• Added chaosmagpy.coordinate_utils.sh_analysis, which performs a spherical harmonic expansion on a callable.

Bugfixes

• Removed Euler pre-rotation, which was not correctly implemented, and added a warning.
• Fixed shc-file loader to correctly exclude extrapolation sites.
• Fixed numpy broadcasting error in chasomagpy.data_utils.mjd2000.

- Python
Published by ancklo about 4 years ago

chaosmagpy - ChaosMagPy v0.7

Version 0.7

Date: August 05, 2021 Release: v0.7 Version of CHAOS: CHAOS-7.8 (0708)

Features

• Added matplotlib's plot_directive for sphinx and added more examples to a new gallery section in the documentation.
• Added chaosmagpy.model_utils.pp_from_bspline to convert the spline coefficients from B-spline to PP format.
• Changed the way piecewise polynomials are produced from the coefficients in shc-files. A B-spline representation is now created in an intermediate step to ensure coefficient time series that are smooth.
• Changed the number format to '16.8f' when writing shc-files to increase precision.
• Configuration parameters in chaosmagpy.basicConfig are now saved to and loaded from a json-formatted txt-file.
• Added keyword arguments to chaosmagpy.chaos.CHAOS.synth_coeffs_sm and chaosmagpy.chaos.CHAOS.synth_values_sm to provide the RC-index values directly instead of using the built-in RC-index file.

- Python
Published by ancklo over 4 years ago

chaosmagpy - ChaosMagPy v0.6

Version 0.6

Date: March 22, 2021 Release: v0.6 Version of CHAOS: CHAOS-7.6 (0706)

Features

• Added new usage sections to the documentation

Bugfixes

• Fixed broken link to RC-index file (GitHub issue #5).
• Added lxml to installation instructions (needed for webpage requests, optional).
• Require hdf5storage version 0.1.17 (fixed read/write intent)

- Python
Published by ancklo almost 5 years ago

chaosmagpy - ChaosMagPy v0.5

Version 0.5

Date: December 23, 2020 Release: v0.5 Version of CHAOS: CHAOS-7.5 (0705)

Features

• Modified "nio" colormap to be white-centered.
• Added spatial power spectrum of toroidal sources (chaosmagpy.modelutils.powerspectrum)

- Python
Published by ancklo about 5 years ago

chaosmagpy - ChaosMagPy v0.4

New release of ChaosMagPy v0.4 for the latest update of the CHAOS model series, CHAOS-7.3

Changelog

Version 0.4

Date: September 10, 2020 Release: v0.4 Version of CHAOS: CHAOS-7.3 (0703)

Features

• Updated RC-index file to RC1997-2020Aug_v4.dat.
• Model name defaults to the filename it was loaded from.
• Added function to read the COV-OBS.x2 model (chaosmagpy.chaos.loadCovObstxtfile) from a text file.
• Added function to read the gufm1 model (chaosmagpy.chaos.loadgufm1txtfile) from a text file.
• Added class method to initialize chaosmagpy.chaos.BaseModel from a B-spline representation.

- Python
Published by ancklo over 5 years ago

chaosmagpy - ChaosMagPy v0.3

This is a new version of ChaosMagPy which can be used together with the latest CHAOS model release (CHAOS-7.2).

Below is a copy of the changelog.

Version 0.3

Date: April 20, 2020 Release: v0.3 Version of CHAOS: CHAOS-7.2 (0702)

News

The version identifier of the CHAOS model using x, which stands for an extension of the model, has been replaced in favor of a simple version numbering. For example, CHAOS-6.x9 is the 9th extension of the CHAOS-6 series. But starting with the release of the CHAOS-7 series, the format CHAOS-7.1 has been adopted to indicate the first release of the series, CHAOS-7.2 the second release (formerly the first extension) and so on.

Features

• Updated RC-index file to RC1997-2020Feb_v4.dat.
• Removed version keyword of chaosmagpy.chaos.CHAOS to avoid confusion.
• Added verbose keyword to the call method of chaosmagpy.chaos.CHAOS class to avoid printing messages.
• Added chaosmagpy.data_utils.timestamp function to convert modified Julian date to NumPy's datetime format.
• Added more examples to the chaosmagpy.chaos.CHAOS methods.
• Added optional nmin and mmax to chaosmagpy.model_utils.design_gauss and chaosmagpy.model_utils.synth_values (nmin has been redefined).
• Added optional derivative to :func:chaosmagpy.model_utils.colloc_matrix of the B-Spline collocation. New implementation does not have the missing endpoint problem.
• Added satellite keyword to change default satellite names when loading CHAOS mat-file.

- Python
Published by ancklo almost 6 years ago

chaosmagpy - ChaosMagPy v0.2.1

This is an update of the previous version ChaosMagPy v0.2 which fixes a problem in the function "zenith_angle" for computing the zenith angle of the sun. This bug did not have any effect on the CHAOS class used for the CHAOS model forward calculation.

- Python
Published by ancklo about 6 years ago

chaosmagpy - ChaosMagPy v0.2

New version using the latest CHAOS-7 geomagnetic field model.

- Python
Published by ancklo over 6 years ago

chaosmagpy - ChaosMagPy v0.1

- Python
Published by ancklo over 6 years ago