FFT_tools: unitary FFTs and power spectra for real data.

This package wraps NumPy's fft module to produce unitary transforms
and power spectra of real numbers in one dimension.  See the code for
the technical details.


Installation
============

Packages
--------

Gentoo
~~~~~~

I've packaged FFT-tools for Gentoo.  You need layman_ and my `wtk
overlay`_.  Install with::

    # emerge -av app-portage/layman
    # layman --add wtk
    # emerge -av dev-python/FFT-tools


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

If you're installing by hand or packaging pycomedi for another
distribution, you'll need the following dependencies:

=======  ============  ================
Package  Debian_       Gentoo_
=======  ============  ================
NumPy_   python-numpy  dev-python/numpy
=======  ============  ================


Installing by hand
------------------

FFT-tools is available as a Git_ repository::

    $ git clone http://www.physics.drexel.edu/~wking/code/git/FFT-tools.git

See the homepage_ for details.  To install the checkout, run the
standard::

    $ python setup.py install


Usage
=====

See the tests in `FFT_tools.py` for simple examples.


Testing
=======

Run internal unit tests with::

    $ python -m FFT_tools

If you want to plot the test results (useful for debugging), you'll
need to install matplotlib_.  Then run::

    $ python -m FFT_tools --plot


Licence
=======

This project is distributed under the `GNU General Public License
Version 3`_ or greater.


Author
======

W. Trevor King
wking@drexel.edu
Copyright 2007-2011


.. _layman: http://layman.sourceforge.net/
.. _wtk overlay:
     http://www.physics.drexel.edu/~wking/unfolding-disasters/posts/Gentoo_overlay
.. _Debian: http://www.debian.org/
.. _Gentoo: http://www.gentoo.org/
.. _NumPy: http://numpy.scipy.org/
.. _Git: http://git-scm.com/
.. _homepage:
     http://www.physics.drexel.edu/~wking/unfolding-disasters/posts/FFT-tools/
.. _matplotlib: http://matplotlib.sourceforge.net/
.. _GNU General Public License Version 3: http://www.gnu.org/licenses/gpl.txt