simonsobs/pspy

Python power spectrum code

pspy

pspy is a cosmology code for calculating CMB power spectra and covariance matrices. See the python example notebooks for an introductory set of examples on how to use the package.

• Free software: BSD license
• pspy documentation: https://pspy.readthedocs.io.
• Scientific documentation: https://pspy.readthedocs.io/en/latest/scientific_doc.pdf

Installing

$ pip install pspy [--user]

You can test your installation by running

$ test-pspy

If everything goes fine, no errors will occur. Otherwise, you can report your problem on the Issues tracker.

If you plan to develop pspy, it is better to checkout the latest version by doing

$ git clone https://github.com/simonsobs/pspy.git /where/to/clone

Then you can install the pspy library and its dependencies via

$ pip install -e /where/to/clone

The -e option allow the developer to make changes within the pspy directory without having to reinstall at every changes.

Ipython notebooks

• Reading, writing and plotting SO maps
• Generate spin0 and spin2 spectra for CAR
• Generate spin0 and spin2 spectra for HEALPIX
• Projecting HEALPIX to CAR
• Compute spectra for standard and pure B modes

Others tutorials can be found under the tutorials directory.

Dependencies

• Python >= 3.8
• pyFFTW https://pyfftw.readthedocs.io
• healpy https://healpy.readthedocs.io
• pixell >= 0.7.0 https://pixell.readthedocs.io

Authors

• Thibaut Louis
• Steve Choi
• DW Han
• Xavier Garrido
• Sigurd Naess
• Adrien La Posta

The code is part of PSpipe the Simons Observatory power spectrum pipeline.