lev
===

Yule-Walker equations (Levinson's algorithm)



Calling Sequence
~~~~~~~~~~~~~~~~


::

    [ar,sigma2,rc]=lev(r)




Arguments
~~~~~~~~~

:r correlation coefficients
: :ar auto-Regressive model parameters
: :sigma2 scale constant
: :rc reflection coefficients
:



Description
~~~~~~~~~~~

resolve the Yule-Walker equations

using Levinson's algorithm.