[python-control-announce] Version 0.3c of python-control is posted

[Richard M. <mu...@cd...>]

Version 0.3c of the python-control package is now released.  Major changes:

* Added place() and lqr() commands, using the SLICOT library (via Enrico Avventi's slycot wrappers).  LQR works on MIMO systems.

* Frequency range for Bode plots are now computed using the poles and zeros of the system.  

* Bode plots can how accept a list of systems: bode(sys1, ..., sysN)

* Put in docstrings for all user accessible functions

* Set up wiki with examples and download instructions

  http://python-control.sourceforge.net

Full list of changes below.

-richard

2010-06-06  Richard Murray  <murray@sumatra.local>

	* examples/pvtol-lqr.py: Added example to test out LQR routines

	* src/matlab.py (bode): created a wrapper that allows MATLAB style
	arguments for bode (eg, bode(sys1, sys2))

	* src/ctrlutil.py (issys): added new function to check if an object
	is a system (state space or transfer function).  Will generalize
	this latter to look for other compatible classes.

	* src/freqplot.py (bode): Compute frequency range of bode plot based
	on poles and zeros
	(bode): Allow bode plot to be passed a list (or tuple) as the first
	argument, in which case multiple bode plots are generated

	* src/statesp.py (StateSpace.zeros): new function to compute zeros
	for a state space system
	(StateSpace): defined new functions to compute poles of a state
	space system

	* src/xferfcn.py (TransferFunction): defined new functions to
	compute poles and zeros of a transfer function.

2010-05-31  Richard Murray  <murray@sumatra.local>

	* src/exception.py (ControlNotImplemented): added new exception, to
	be used for functions that are not yet implemented

	* src/statefbk.py (lqr): added lqr function (using slycot).  Still
	needs to be verified to make sure calculations are correct.

	* ChangeLog: converted to standard GNU formation (old style below)
	* setup.py: updated package number to v0.3, changed URL to
	sourceforge wiki