ChangeLog Summary
===================

March 2012
--------------
* 0.5.2: add pmtm

February 2012
--------------
* 0.5.1: add dpss wtapering windows
* 0.5.0: 
   * NPSD replaced by NFFT (qlso not correct for ARMA methods that do not have NFFT since not fourier)
   * Correlogram replaced by pcorrelogram 
   * more consistent function and class naming convention 
   * Update the entire documentation. 
* 0.4.6: fixed pylab_periodogram, documentation (installation)

January 2012
---------------

* 0.4.5: start to play with Pypi
October 2011
-----------------

* 0.4.4: Start to provide the library on the web www.assembla.com


May 2011
----------

* 0.4.3: :func:`spectrum.periodogram.pdaniell` implemented

April 2011
-----------

* 0.4.2: pcovar implemented
* 0.4.1: pmodcovar implemented
* 0.4.0: arcovar and modcovar "simplified" version. Documentation updated (tutorial, spectral_estimation, quick start...)
* 0.3.19: add linear_prediction module with codecs (eg. ac2poly, poly2rc....)
* 0.3.18 fix bug in levinson (Real data case only) and add ac2poly function.
* 0.3.17: validation of the modcovar algorithm versus the new arcovar_simplified function.
* 0.3.16: add a simplified version of arcovar called arcovar_simplified. It is 10 times faster and with a different algorithm provides the same results as arcoar, which validates the two codes!
* 0.3.15: add corrmtx function. Tested it within music algorithm
* 0.3.14: cleanup the eigen and music methods by moving the automatic order selection outside the functions.
* 0.3.13: Add AIC and MDL criteria to deal with automatic eigen values selection in pmusic and pev
* 0.3.12: test and validate the pmusic and pev pseudo spectrum.
* 0.3.11: burg and pburg  finalised
* 0.3.10: tools module cleanup and finalised
* 0.3.9:  ma fully checked and add pma validated
* 0.3.8:  minvar fully checked and add pminvar
* 0.3.7:  aryule fully checked and add pyule
* 0.3.6:  Speed up by 3 the ARMPSD (renamed to arma2psd)
* 0.3.5:  refactoring
* 0.3.4:  fix all tests and doctests
* 0.3.3:  function Daniell's periodogram implemented in module periodogram
* 0.3.2:  Create class MovingAverage, pburg, pARMA, Correlogram, Periodogram, Minvar, pma
* 0.3.1:  Cleanup MA, ARMA, BURG, MINVAR
* 0.3.0:  Create an ABC class Spectrum, a FourierSpectrum and ParametricSpectrum. 
* 0.2.4:  Finalise doc/test of the testdata module
* 0.2.3:  define a PSD class
* 0.2.2:  cleanup cholesky.py
* 0.2.1:  a new sphinx layout, 
* 0.2.0:  correlogram.py, correlation.py, levinson.py fully completed

March 2011
------------

* 31 March:
    - finalise a criteria class for AIC, FPE criteria. Incorporated it in arburg  

* 28th March:
    - First version of :func:`arcov`, :func:`aryule` and :func:`arburg` 
    - add many windows (parzen, flattop, ...).

* 22th March 2011:
    - put this doc online on thomas-cokelaer.info (fixed main links)

* 21th March 2011:
    - create psd.py defines useful class to manage Spectrum/plot
    - periodogram.py has a simple periodogram implementation equivalent to psd in pylab without overlaping. 

* 7th March 2011: 
    - add periodogram module
    - fix ARMA method in arma module
* 4th March 2011: 
    - Create first revision of spectrum package