pyflagser is a python API for the flagser C++ library by Daniel Lütgehetmann which computes the homology of directed flag complexes. Please check out the original luetge/flagser <https://github.com/luetge/flagser>_ GitHub repository for more information.

Project genesis

pyflagser is the result of a collaborative effort between L2F SA <https://www.l2f.ch/>, the Laboratory for Topology and Neuroscience <https://www.epfl.ch/labs/hessbellwald-lab/> at EPFL, and the Institute of Reconfigurable & Embedded Digital Systems (REDS) <https://heig-vd.ch/en/research/reds>_ of HEIG-VD.

Installation

Dependencies


``pyflagser`` requires:

- Python (>= 3.8)
- NumPy (>= 1.17.0)
- SciPy (>= 0.17.0)

User installation

If you already have a working installation of numpy and scipy, the easiest way to install pyflagser is using pip ::

python -m pip install -U pyflagser

Documentation

API reference (stable release): https://docs-pyflagser.giotto.ai

Contributing

We welcome new contributors of all experience levels. The Giotto community goals are to be helpful, welcoming, and effective. To learn more about making a contribution to pyflagser, please see the CONTRIBUTING.rst <https://github.com/giotto-ai/pyflagser/blob/master/CONTRIBUTING.rst>_ file.

Developer installation


C++ dependencies:
'''''''''''''''''

-  C++14 compatible compiler
-  CMake >= 3.9

Source code
'''''''''''

You can check the latest sources with the command::

    git clone https://github.com/giotto-ai/pyflagser.git


To install:
'''''''''''

From the cloned repository's root directory, run

.. code-block:: bash

   python -m pip install -e ".[tests]"

This way, you can pull the library's latest changes and make them immediately available on your machine.

Testing
'''''''

After installation, you can launch the test suite from outside the source directory::

    pytest pyflagser


Changelog
---------

See the `RELEASE.rst <https://github.com/giotto-ai/pyflagser/blob/master/RELEASE.rst>`__ file
for a history of notable changes to pyflagser.

Important links
~~~~~~~~~~~~~~~

- Official source code repo: https://github.com/giotto-ai/pyflagser
- Download releases: https://pypi.org/project/pyflagser/
- Issue tracker: https://github.com/giotto-ai/pyflagser/issues


Contacts:
---------

maintainers@giotto.ai

Keywords

topological data analysis

persistent homology

directed flags complex

persistence diagrams

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