anyway to clear variable in Matlab workspace from app?
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Yu Li
le 31 Août 2019
Commenté : Walter Roberson
le 19 Avr 2023
Hi:
is there anyway to clear variable in Matlab workspace from app designer?
an workaround I know is to use 'assign' function, to assign an empty value to that variable. but I want know how to clear it.
Thanks!
Yu
2 commentaires
Adam Danz
le 31 Août 2019
There should be no need to clear variables from any workspace from within a different workspace. If there is a need to do this, it raises red flags that something is being done in a bad way. Could you explain why you need to clear an external workspace?
Adam Danz
le 31 Août 2019
Modifié(e) : Adam Danz
le 31 Août 2019
There is rarely a need to clear variables from within a function but sometimes it useful to do so. There should never be a need to clear variables in a different workspace. Without knowing more about what you're doing, the best help I can offer is trying to clean up any reasons why someone would need to do this in the first place.
What workspace is the variable in (the base workspace?), how did it get there, and why does it need to be cleared from within a function (which has its own workspace).
Réponse acceptée
Walter Roberson
le 31 Août 2019
evalin('base', 'clear VARIABLENAME')
11 commentaires
Walter Roberson
le 19 Avr 2023
Please see https://www.mathworks.com/help/matlab/matlab_prog/command-vs-function-syntax.html to get more information about why evalin('base', 'clear app.PLUTODropDown.Value') is not going to work.
Walter Roberson
le 19 Avr 2023
I would also like to ask you, how can I list in the dropdown the variable that are created within the matlab.app application and not those that are in the base WS?
You will find that in practice most of them should not be eligible for clearing.
Plus de réponses (1)
R.G.
le 31 Août 2019
To clear variable use 'clear' function instead, ex:
clear('v')
where 'v' is variable name.
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