Another reason might be that the professional version you are using is
MATLAB 6.1 (R12.1) while the student version you are using was built from
MATLAB 6.0 (R12). There is no MATLAB 6.1 (R12.1) Stuent Version.
If the results are completely different, please report your findings to
first try to reproduce this behavior in MATLAB 6.0 Professional.
> There shouldn't be any differences between the results that you get back
> from the two different versions.
> Some things that can cause different installations to give different
> different random number state -- get around this by setting the state of
> random number generator on both machines with rand('state',0).
> Different versions or implementations of functions -- it is possible that
> there are different functions on the path of the two different systems.
> can check this with the which function , or step through your function in
> Much less likely, but not impossible, is if your are working with almost
> singular matrices then you may get different results on different
> due to different low level math.
> I would guess one of the first two -- probably the different files on your
> > I have the student version of MATLAB R12...
> > I wrote an m file doing an estimator feedback design so I was very
> > familiar with the way it ran and performed...
> > We ran the exact same m file on a computer at school that had a full
> > version of MATLAB 6.1 and it ran differently.....
> > The feedback gain matrices were completely different than the one on
> > the student version...
> > whats up with this? i am assuming that the full version is correct,
> > which makes my student version worthless.
> > What are my options...
> > chrish