s4cmb 0.3.3

The package

Systematics For Cosmic Microwave Background (s4cmb), is a package to study instrumental systematic effects in the context of current and future Cosmic Microwave Background experiments.

Requirements

The pipeline is mainly written in python and it has the following dependencies:

• numpy, matplotlib

• h5py (I/O)

• astropy, ephem, pyslalib, healpy (astro libs)

• f2py, weave (interfacing with python)

While we use python 2.7, we try to make it compatible with python 3.x. If you are using python 3.x and you encounter an error, please open an issue or a pull request so that we fix it asap.

Some parts of the pipeline are written in C (and compiled on-the-fly via the package weave), and in Fortran (to come). The latter is interfaced with python using f2py. The compilation is done usually when you install the package (see setup.py), but we also provide a Makefile for more customized compilations (see dir/Makefile).

Installation

You can easily install the package using pip

pip install s4cmb

Otherwise you can fork the repo from the github repository and clone it to your machine. Use the setup.py for the installation. Just run:

python setup.py install

Make sure you have correct permissions (otherwise just add –user). You can also directly use the code by updating manually your PYTHONPATH. Just add in your bashrc:

s4cmbPATH=/path/to/the/package
export PYTHONPATH=$PYTHONPATH:$s4cmbPATH

Coming soon: dockerfile :-)

Examples

You can find notebooks describing how to use basic functionalities of s4cmb in the folder jupyter_doc.

TODO

• Add the dockerfile.

Main developers

• Julien Peloton (j.peloton at sussex.ac.uk)

• Giulio Fabbian (gfabbian at ias.u-psud.fr)