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How to stop a script if conditions are met.

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Cory 2012 年 2 月 2 日
コメント済み: Jingyang Xie 2021 年 1 月 6 日 19:50
I am using the 'if' function to detect if a user inputs a number that is not 5 digits long. What I would like is a function that stops the script if a certain condition is met without displaying an error message.
P.S. I'm very new to MATLAB.

  1 件のコメント

Jingyang Xie
Jingyang Xie 2021 年 1 月 6 日 19:50
Hi Cory, have you solved this problem? I think I encountered the same problem...



Walter Roberson
Walter Roberson 2012 年 2 月 2 日
編集済み: MathWorks Support Team 2018 年 11 月 9 日
To stop running a script or function and return to the invoking function or command window, use the return function. For example,
if a > b
Any code in the current script or function that is after the return function is not run

  2 件のコメント

Hao Cheng
Hao Cheng 2019 年 2 月 11 日
"return" will terminate the current function and go back to the function that calls it. Is it possible then to stop running the entire script in GUI?
For example. A button's Callback function calls another function F. How to stop the Callback function as well if certain critieria in function F is met?
Diaa 2019 年 3 月 12 日


その他の回答 (1 件)

Hamid Ramezani
Hamid Ramezani 2019 年 9 月 30 日
you may use "error" function instead of return

  3 件のコメント

Walter Roberson
Walter Roberson 2019 年 9 月 30 日
However, "without displaying an error message" is part of the requirement here.
Adam K
Adam K 2020 年 12 月 10 日
I think a 'msgbox' to really alert the user what is the issue, and then the 'error' funcition to stop the code would be a workaround. This way the user is aware that the issue is not really an 'error' when they see the red error font.
msg = "You've got a number that is not 5 digits long";
f = msgbox(msg)
Rik 2020 年 12 月 10 日
I wonder if it is possible to detect if the code is running in a try block. In such cases the message might be more confusing than simply throwing the error.


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