Changing variable from appdesigner in matlab script

Hello,

How can I send a value for a variable from appdesigner to the workspace which is then used in a matlab script?

Answer 1

[Eric Delgado]

You can use assignin to send the variable to Matlab base workspace.

% Suppose that you have a variable named "app.myVariable"
assignin('base', 'myVariable', app.myVariable)
openvar('myVariable')

[Furkan Karaman]

thanks Eric!,

the variable appears in the workspace, but if I want to run a script afterwards the variable is not recognized.

[Eric Delgado]

What is your purpose?! If the variables are in the base Matlab workspace, yes, you can call it from a script. But if you're trying to change your app's data and bring it back into your app, you should use a function instead of a script.

app.myVariable = MyFunction(app.myVariable);

[Furkan Karaman]

example:

function StartButtonPushed(app, event)

assignin('base','MyResolution',app.myVariable)

testscript;

end

In the testscript the value for myResolution should be used. Btw it s also not working if I use instead of the base workspace the function workspace('caller').

[Eric Delgado]

Hey, don't use assignin to pass your app properties to a script. Just transform your script into a function and call it, passing your app properties as input arguments. See below and code attached.

[Furkan Karaman]

Thank you so much Eric! Now it works

[Eric Delgado]

Great to hear! Now that you are super happy with my support, you accept my answer, ok? :)