pixell

This is an early development repository for a CMB map analysis library. The API for core modules will likely remain the same as in amaurea/enlib, but module and repository names are very likely to change!

• Free software: BSD license
• Documentation: https://pixell.readthedocs.io.
• Tutorial

Dependencies

• Python>=2.7 or Python>=3.4
• gcc/gfortran or Intel compilers (clang might not work out of the box)
• libsharp (downloaded and installed)
• automake (for libsharp compilation)
• healpy, Cython, astropy, numpy, scipy, matplotlib, pyyaml, h5py, Pillow (Python Image Library)

Installing

To install, run:

$ python setup.py install --user

Existing libsharp installation

You can use an existing libsharp installation by symlinking the libsharp directory into a directory called _deps in the root directory, such that the file pixell/_deps/libsharp/libsharp/sharp.c exists.

Intel compilers

Intel compilers might require a two step installation as follows

$ python setup.py build_ext -i --fcompiler=intelem --compiler=intelem
$ python setup.py install --user

Development workflow (recommended)

If you are a developer, run:

$ python setup.py build_ext -i

and add the cloned directory to your Python path so that changes you make in any python file are immediately reflected. e.g., in your .bashrc file,

export PYTHONPATH=$PYTHONPATH:/path/to/cloned/pixell/directory

If you also need non-Python code to be recompiled, run:

$ python setup.py clean

before the above steps.

Contributing

If you have write access to this repository, please:

1. create a new branch
2. push your changes to that branch
3. merge or rebase to get in sync with master
4. submit a pull request on github

If you do not have write access, create a fork of this repository and proceed as described above. For more details, see Contributing.