set base workspace variable from callback

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ander 2015-5-29

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https://ww2.mathworks.cn/matlabcentral/answers/220921-set-base-workspace-variable-from-callback

评论： Image Analyst 2015-5-29

Good morning, I am trying to set one variable of the base workspace from a pushbutton callback. I tried with assign but it isn`t possible because when I am in the callback the variable doesn`t exist. When I get out of the callback I see the variable in the workspace but it hasn`t changed.

Thanks in advance!

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Answer 1

Image Analyst 2015-5-29

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https://ww2.mathworks.cn/matlabcentral/answers/220921-set-base-workspace-variable-from-callback#answer_180934

You need to use "assignin()" - is that what you used? If you did, then what was your code? Why do you want to do that anyway, instead of using normal ways of passing variables?

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ander 2015-5-29

Thanks for the answer, yes I use that. Look the problem is that when I start the simulation the simulink model use the 'base' workspace, but when I push the button and enter in the pushbutton callback the workspace 'base' doesn`t exist, so it is imposible to change the value. Finally when I am out of the callback the workspace 'base' exist but it doesn`t change. I don`t know other form to do that.

Image Analyst 2015-5-29

I don't know Simulink but in MATLAB, that's not how you're supposed to do it. You're supposed to pass variables in and out via the input and output argument lists. Can you do that in Simulink?

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