filterDesigner does not open: Value must be a handle
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I have MATLAB 2025a license. When I try to use filerDesigner and I type "filterDesigner" in the command window, I get the error message:
I type:
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>> filterDesigner
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I get:
Value must be a handle.
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1 Commento
Do you have the Signal Processing Toolbox licenced and installed ?
What do you get if you type
ver
and
status = license('test', 'Signal_Toolbox')
Using the ver command, the Signal Processing Toolbox should appear in the list.
Using the licence test, the status variable should happen to be 1.
Risposte (1)
Anjaneyulu Bairi
il 13 Ott 2025
Hi,
There might be another file named filterDesigner.m created by you in your current folder or somewhere on your MATLAB path, which could be interfering with the built-in app.
Run this command to see which file MATLAB is accessing:
which filterDesigner -all
and, It should point out to MATLAB installation directory
(e.g., C:\ProgramFiles\MATLAB\R2025a\toolbox\signal\sigtools\filterDesigner.m)
If which shows the correct built-in function but the app still doesn't launch, there might be an issue with your MATLAB installation. Try resetting the MATLAB path and refreshing the toolbox cache:
restoredefaultpath; rehash toolboxcache
- After running these commands, attempt to launch filterDesigner again.
- If the problem remains, you may need to reinstall the Signal Processing Toolbox.
Hope this helps!
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