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About boule


Package license: BSD-3-Clause

Feedstock license: BSD-3-Clause

Summary: Reference ellipsoids for geodesy and geophysics



Boule is Python library for representing Reference Ellipsoids, calculating their gravity fields, and converting coordinates defined on the ellipsoids. The main use cases are 1) calculating normal gravity (for gravity anomalies and disturbances); 2) spherical gravity modeling, which requires geodetic to geocentric spherical coordinate conversions; 3) input ellipsoid parameters for spherical harmonic analysis. Boule is French for ball and also a traditional shape of bread resembling a squashed ball (much like the Earth).

Current build status

All platforms:

Current release info

Name Downloads Version Platforms
Conda Recipe Conda Downloads Conda Version Conda Platforms

Installing boule

Installing boule from the conda-forge channel can be achieved by adding conda-forge to your channels with:

conda config --add channels conda-forge
conda config --set channel_priority strict

Once the conda-forge channel has been enabled, boule can be installed with conda:

conda install boule

or with mamba:

mamba install boule

It is possible to list all of the versions of boule available on your platform with conda:

conda search boule --channel conda-forge

or with mamba:

mamba search boule --channel conda-forge

Alternatively, mamba repoquery may provide more information:

# Search all versions available on your platform:
mamba repoquery search boule --channel conda-forge

# List packages depending on `boule`:
mamba repoquery whoneeds boule --channel conda-forge

# List dependencies of `boule`:
mamba repoquery depends boule --channel conda-forge

About conda-forge

Powered by NumFOCUS

conda-forge is a community-led conda channel of installable packages. In order to provide high-quality builds, the process has been automated into the conda-forge GitHub organization. The conda-forge organization contains one repository for each of the installable packages. Such a repository is known as a feedstock.

A feedstock is made up of a conda recipe (the instructions on what and how to build the package) and the necessary configurations for automatic building using freely available continuous integration services. Thanks to the awesome service provided by Azure, GitHub, CircleCI, AppVeyor, Drone, and TravisCI it is possible to build and upload installable packages to the conda-forge Anaconda-Cloud channel for Linux, Windows and OSX respectively.

To manage the continuous integration and simplify feedstock maintenance conda-smithy has been developed. Using the conda-forge.yml within this repository, it is possible to re-render all of this feedstock's supporting files (e.g. the CI configuration files) with conda smithy rerender.

For more information please check the conda-forge documentation.


feedstock - the conda recipe (raw material), supporting scripts and CI configuration.

conda-smithy - the tool which helps orchestrate the feedstock. Its primary use is in the construction of the CI .yml files and simplify the management of many feedstocks.

conda-forge - the place where the feedstock and smithy live and work to produce the finished article (built conda distributions)

Updating boule-feedstock

If you would like to improve the boule recipe or build a new package version, please fork this repository and submit a PR. Upon submission, your changes will be run on the appropriate platforms to give the reviewer an opportunity to confirm that the changes result in a successful build. Once merged, the recipe will be re-built and uploaded automatically to the conda-forge channel, whereupon the built conda packages will be available for everybody to install and use from the conda-forge channel. Note that all branches in the conda-forge/boule-feedstock are immediately built and any created packages are uploaded, so PRs should be based on branches in forks and branches in the main repository should only be used to build distinct package versions.

In order to produce a uniquely identifiable distribution:

  • If the version of a package is not being increased, please add or increase the build/number.
  • If the version of a package is being increased, please remember to return the build/number back to 0.

Feedstock Maintainers


A conda-smithy repository for boule.







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