Restore MATLAB functions e.g. openfig.m

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Louis Vallance
Louis Vallance on 5 Sep 2018
Commented: Louis Vallance on 5 Sep 2018
Dear all,
I was playing around with openfig.m the other day. I kept a back-up copy of the file just in case something went wrong. However, I have managed to mess something up so that even with the back-up file reinstated, .fig files will no longer open and I get the error "Undefined variable "matlab" or class "".
A general question: If the user somehow manages to "break" an M-file in the MATLAB root (like openfig.m), is there any way to restore the original M-files without reinstalling MATLAB? All of my project code is under version control, but this is not the case for the files under the root folder.
Best regards,
Louis Vallance
Louis Vallance on 5 Sep 2018
Hi Stephen,
This is a very good tip. I've done this in the past and will double-down on my efforts.

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Answers (1)

Matt J
Matt J on 5 Sep 2018
Edited: Matt J on 5 Sep 2018
After re-instating the backup, did you try restarting MATLAB? You could also try rehash() and/or
>> clear classes
  1 Comment
Louis Vallance
Louis Vallance on 5 Sep 2018
Unfortunately this did not help. Actually, even after reinstalling MATLAB the issue still persists. I have written more information about the issue in Undefined variable "matlab" or class when opening MATLAB figure.

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