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I have purchased the Signal Processing Toolbox but still get an error when trying to use a function

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Brian
Brian 2024-6-10
回答： Walter Roberson 2024-6-10
I have purchased the Signal Processing Toolbox, but MATLAB still throws a "you need the Signal Processing Toolbox" error when I try to use the square function per the screenshot. I have tried reinstalling MATLAB and restarting the program.

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回答（2 个）

Star Strider
Star Strider 2024-6-10
Ran in:
I am not certain what the problem is.
imshow(imread('Screenshot 202....49.59 AM.png'))
First, run these from a script or your Command Window:
restoredefaultpath
rehash toolboxcache
If the problem persists after that, then Contact Support.
.
Walter Roberson
Walter Roberson 2024-6-10
Depending exactly how you install the toolbox, situations can arise where a toolbox is installed but the license is not updated.
Try Help -> Licensing -> Update Current licenses

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