pyshtools

SHTOOLS - Spherical Harmonic Tools

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Project description

SHTOOLS LOGO License

SHTOOLS/pyshtools is a Fortran-95/Python library that can be used for spherical harmonic transforms, multitaper spectral analyses, expansions of gridded data into Slepian basis functions, standard operations on global gravitational and magnetic field data.

FEATURES
HOW TO USE
INSTALLATION
- pyshtools (for Python)
- SHTOOLS (for Fortran 95)
CONTRIBUTING
MAINTAINERS AND CONTRIBUTORS
LICENSE
REFERENCES

FEATURES

Supports all standard normalizations and phase conventions of the spherical harmonic functions.
Effortless conversion between real and complex harmonics, and between different normalization and phase conventions.
Use of both regularly sampled geographic grids and grids appropriate for Gauss-Legendre quadrature.
Spherical harmonic transforms proven to be accurate up to about degree 2800 for the native Fortran 95 backend and beyond using the DUCC0 backend.
Perform localized multitaper spectral analyses, or expand gridded data in terms of localized Slepian basis functions.
Support for standard data and file formats, including xarray and netcdf.
Import research-grade gravity, topography, and magnetic field datasets with a single command.
Creation of publication quality maps using Cartopy and PyGMT.
Support multithreaded programming using the OpenMP API.

HOW TO USE

A variety of Python tutorials and guides are available to explain the main library features. To get started, click on the following Python tutorials and run them interactively in Binder:

INSTALLATION

SHTOOLS can be invoked in any Fortran 95 or Python program. The core software is written in Fortran 95, and Python wrappers and dedicated classes allow simple access to the fortran-compiled routines. To install it, run these commands below:

pyshtools (for Python)

Install using `conda`:

conda install -c conda-forge pyshtools
conda update -c conda-forge pyshtools  # to upgrade a pre-existing installation

Install using `pip`:

pip install pyshtools
pip install --upgrade pyshtools  # to upgrade a pre-existing installation
pip install pyshtools --no-binary pyshtools  # build from source
pip install git+https://github.com/SHTOOLS/SHTOOLS@develop  # install the develop branch from source

For developers:

Install the system level build requirements:

sudo apt-get install build-essential cmake gfortran  # Debian, Ubuntu and derivatives
sudo dnf group install "C Development Tools and Libraries" "Development Tools"  # Fedora, Centos, RHEL and derivatives
sudo dnf install cmake gcc-fortran  # Fedora, Centos, RHEL and derivatives
xcode-select --install  # macOS

Then clone the shtools repo, install the other dependencies, and install manually in a conda environment:

git clone https://github.com/SHTOOLS/SHTOOLS.git
cd shtools
conda create -n your_env_name python=3.xx  # create a new conda environment, if desired
conda env update -n your_env_name -f environment.yml
conda activate your_env_name  # activate the new conda environment
pip install --no-build-isolation -e .  # install into the shtools folder and link to the active python environment

SHTOOLS (for Fortran 95)

Install using the brew package manager (MacOS, Linux, Windows):

brew install shtools

Install using the macports package manager (MacOS):

sudo port install shtools

Install from source:

Clone or download the this repo, and then execute one (or both) of the following commands in the shtools directory:

make fortran
make fortran-mp  # for OpenMP Fortran routines

Further installation instructions and options can be found in the web documentation.

CONTRIBUTING

We work on the develop branch and only push releases to master. Please base all pull requests on develop.

CONTRIBUTORS

For the full list of contributors, see the AUTHORS file.

LICENSE

This project uses the BSD 3-Clause license, as found in the LICENSE file.

REFERENCES

Mark A. Wieczorek and Matthias Meschede (2018). SHTools --- Tools for working with spherical harmonics, Geochemistry, Geophysics, Geosystems, 19, 2574-2592, doi:10.1029/2018GC007529.
Mark Wieczorek, et al. (2019). SHTOOLS/SHTOOLS. Zenodo, doi:10.5281/zenodo.3457861

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4.13.1

Jul 9, 2024

4.12.2

Mar 18, 2024

4.12.1

Mar 18, 2024

4.11.10

Jan 18, 2024

4.11.8

Jan 18, 2024

4.11.7

Jan 17, 2024

4.10.4

Aug 28, 2023

4.10.3

May 17, 2023

4.10.2

May 4, 2023

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Sep 9, 2022

4.10

Apr 27, 2022

4.9.1

Aug 25, 2021

4.8

Jan 26, 2021

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Sep 24, 2020

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Sep 14, 2020

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Sep 23, 2019

4.4.1

Dec 17, 2018

4.3

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4.2

May 20, 2018

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Nov 28, 2017

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Nov 28, 2017

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Dec 16, 2016

3.4

Aug 30, 2016

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pyshtools 4.13.1

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TABLE OF CONTENTS

FEATURES

HOW TO USE

INSTALLATION

pyshtools (for Python)

Install using conda:

Install using pip:

For developers:

SHTOOLS (for Fortran 95)

Install using the brew package manager (MacOS, Linux, Windows):

Install using the macports package manager (MacOS):

Install from source:

CONTRIBUTING

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Install using `conda`:

Install using `pip`: