semvec/pypi-packages huggingface dataset:
mpseudo 0.1.4
Computation of pseudospectra of matrices in parallel
Keywords: matrix pseudospectra,eigenvalue problem,computational algebra,rectangular matricies

Mpseudo |Build Status|
======================

Mpseudo performs multicore and precise computation of pseudospectra of
(square or rectangular) matricies. It uses pseudospectra definition and
find epsilon-values on a regular grid of a complex plane. It uses
``multiprocessing`` module to share computations between cpu-cores, and
``mpmath`` module to make calculations with high precision.

Dependencies
------------

``Mpmath`` module is needed to perform computations with high precision.

``pip install mpmath``

If you don't need ability of high precision pseudospectra computation
(more than 15 digits), the ``mpseudo`` can work without ``mpmath``. The
only requirement - `NumPy <http://numpy.org>`__. It should be installed
on your system or in virtual environment.

Installation
------------

``git clone https://github.com/scidam/mpseudo.git``

Example
-------

The pseudospectrum of the gallery(5) MatLab matrix looks like this (up
to 100-digits of accuracy used for a matrix resolvent computation):

.. figure:: gal5pseudo.png
   :alt: Pseudospectrum of gallery(5) MatLab matrix

   Pseudospectrum of gallery(5) MatLab matrix

The pseudospectra above is obtained via the following lines of code:

.. code:: python

    from matplotlib import pyplot
    from mpseudo import pseudo

    # Gallery(5) MatLab matrix (exact eigenvalue is 0 (the only!))
    A = [[-9, 11, -21, 63, -252],
         [70, -69, 141, -421, 1684],
         [-575, 575, -1149, 3451, -13801],
         [3891, -3891, 7782, -23345, 93365],
         [1024, -1024, 2048, -6144, 24572]]

    # compute pseudospectrum in the bounding box [-0.05,0.05,-0.05,0.05] with 
    # resolution 100x100 (ncpu = 2 processes) and 50-digits precision.
    psa, X, Y = pseudo(A, ncpu=2, digits=50, ppd=100, bbox=[-0.05,0.05,-0.05,0.05])

    # show results
    pyplot.conourf(X, Y, psa)
    pyplot.show()

Note, if ``mpmath`` module is not installed, pseudospectrum of the
matrix will be computed with standard (double, 15-digits) precision,
which is not sufficient for this case.

Interesting, but
`Eigtool <http://www.cs.ox.ac.uk/pseudospectra/eigtool/>`__ or
`PseudoPy <https://github.com/andrenarchy/pseudopy>`__ tools (along with
``scipy eigvals`` function) applied to the matrix A in the example above
lead to inaccurate results (due to insufficient (double) precision):

.. figure:: inacpseudo.png
   :alt: Pseudospectrum of gallery(5) MatLab matrix plotted via PseudoPy

   Pseudospectrum of gallery(5) MatLab matrix plotted via PseudoPy

Read about this script in Russian
`here <http://easydan.com/arts/arch/high-prec-pseudospectra/>`__.

License
-------

Mpseudo is free software licensed under the `MIT
License <http://opensource.org/licenses/mit-license.php>`__.

.. |Build Status| image:: https://travis-ci.org/scidam/mpseudo.svg?branch=master
   :target: https://travis-ci.org/scidam/mpseudo
mpd-box 0.1.1
MPD-Box start a song in Music Player Daemon by simply scanning a NFC tag.
Keywords: MPD MPD-box NFC Music

=======
MPD-Box
=======

MPD-Box start a song in Music Player Daemon by simply scanning a NFC tag.

.. image:: https://readthedocs.org/projects/mpd-box/badge/?version=latest
	:target: http://mpd-box.readthedocs.org/en/latest/?badge=latest
	:alt: Documentation Status

Changelog
=========

0.1.1 (2015-11-14)
------------------

**Initial version**

- Web service to read, access, and edit tags
- Reading tags for Raspberry EXPLORE-NFC
- Logging using RotatingFileHandler
- Config file with ConfigParser
- Run as process, daemon, or service