Why do I get this error?

3 views (last 30 days)
Luis
Luis on 12 Dec 2012
Any idea of why do I get this error?
>> num = 1
num =
1
>> denom = [1 2 3]
denom =
1 2 3
>> sys = tf(num,denom)
sys =
1
-------------
s^2 + 2 s + 3
Continuous-time transfer function.
>> bandwidth(sys) Error using DynamicSystem/bandwidth (line 33) The "bandwidth" command cannot be used for models of class "tf".

Answers (1)

Babak
Babak on 12 Dec 2012
Just worked on my computer.. here's your result:
>> bandwidth(sys)
ans =
2.0385
My ver command gives this:
>> ver
------------------------------------------------------------------------------------------------
MATLAB Version: 8.0.0.783 (R2012b)
MATLAB License Number: ******
Operating System: Microsoft Windows 7 Version 6.1 (Build 7601: Service Pack 1)
Java Version: Java 1.6.0_17-b04 with Sun Microsystems Inc. Java HotSpot(TM) Client VM mixed mode
------------------------------------------------------------------------------------------------
  3 Comments
Lucy
Lucy on 12 Feb 2013
I have MATLAB Version: 7.14.0.739 (R2012a) on my school campus computers, neither:
bandwidth(sys) (where sys is a tf) or syss=ss(sys)
will work...
Is there something I'm missing or is this an outdated version problem?

Sign in to comment.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!