[SciPy-Dev] Discrete-time additions to scipy.signal

[Jeffrey Armstrong]

Hi folks, I've been working on some additions to the scipy.signal module. 
A significant portion of my work involves dealing with linear systems in 
the discrete-time domain, but I found that most of the functionality I 
would need in scipy is implemented only in the continuous domain.  I've 
therefore added some code to handle the discrete time cases.  My fork is 
visible at:

https://github.com/ArmstrongJ/scipy

Additionally, I presented at PyCon 2011, and I briefly discussed a 
discrete algebraic Riccati equation solver I had implemented in Python. 
I've included that code into scipy.signal along with a continuous 
implementation.

I'd appreciate some comments and review of the code.  Everything seems to 
be working for me at this point, but any constructive criticism is greatly 
appreciated.

-Jeff

Jeff Armstrong - jba at sdf.lonestar.org
SDF Public Access UNIX System - http://sdf.lonestar.org