My first contribution to Octave

[Lukas Reichlin]

Dear Octave Community

I wish to make my first contribution to Octave, intended for the  
control package. It's a function called svplot(sys) and it plots the  
singular values of a MIMO system over a range of frequencies, similar  
to Matlab's sigma(sys). You can find the m-file together with a little  
demo here:

http://n.ethz.ch/student/lukasre/download/svplot/

I hope my work is useful to Octave :-)

Regards,
Lukas

BTW: I'm an engineering student, not a professional coder, so please  
let me know about possibilities to improve the function!