Error on using tf function and rlocus

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Filippo Colorio
Filippo Colorio 2023-1-11
评论： Star Strider 2023-1-12
Hi
I'm trying to use this simple comand:
>> sys = tf([2 5 1],[1 2 3]);
>> rlocus(sys)
(it's the same as the example in Matlab tf page)
When I run these two lines Matlab diplays as follow:
The specified superclass 'numlti' contains a parse error, cannot be found on MATLAB's search path, or is shadowed by another file with the same name.
I try to search conflicts using
>> path
>> which -all <conflicting_function>
but he says '<conflicting_function>' not found.
How can I fix this?

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回答（1 个）

Star Strider
Star Strider 2023-1-11
Ran in:
The correct approach to finding potential overshadowing functions or variables is:
which -all tf
/MATLAB/toolbox/control/ctrlmodels/@tf/tf.m % tf constructor /MATLAB/toolbox/control/ctrlmodels/@DynamicSystem/tf.m % DynamicSystem method /MATLAB/toolbox/ident/ident/@idParametric/tf.m % idParametric method /MATLAB/toolbox/mpc/mpc/@mpc/tf.m % mpc method /MATLAB/toolbox/shared/controllib/engine/@StaticModel/tf.m % StaticModel method
which -all rlocus
/MATLAB/toolbox/control/ctrlobsolete/rlocus.m /MATLAB/toolbox/control/ctrldesign/@DynamicSystem/rlocus.m % DynamicSystem method
and should only produce that sort of result.
Run these from a script or the Command Window:
restoredefaultpath
rehash toolboxcache
then try the example code again.
If it still fails, Contact Support.
.
  2 个评论
Filippo Colorio
Filippo Colorio 2023-1-12
Thank you for the answer.
Unfortunately this does not work and displays the same error message.
Maybe i should contact the Matlab Support
Best regards.
Star Strider
Star Strider 2023-1-12
My pleasure!
I hope MathWorks Support can solve this for you, since otherwise uninstalling and reinstalling MATLAB may be your only option.

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