[python-control-discuss] Frequency response data object

[Rene v. P. <ren...@gm...>]

Hello,

I think I have got a workable frequency response data object added. I also
added a test file in the tests directory.

For now, the frequency vectors of different FRD objects need to match; no
interpolation / clipping yet.

I also modified both StateSpace and TransferFunction to be combinable with
matrix-like objects in feedback, multiplication, etcetera, so now something
like

sys.feedback([[0.1, 0.3],[0.0, 1.0]])

will work, given an 2 input 2 output system.

Shall I merge into the trunk, or does anyone want to check first? The frd
branch (based on 0.5c) is located at

svn+ssh://svn.code.sf.net/p/python-control/code/branches/add-frd

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René van Paassen        | ______o____/_|     Ren...@gm...
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