Passing variable from MATLAB APP Designer Edit Field to a variable inside a .m file.

Currently I am able to create a GUI in the Matlab App Designer and I want to connect some of the input edit field value to some variable inside a .m file. How do I do that?

GUI:

function x_valueEditFieldValueChanged(app, event)

value = app.x_valueEditField.Value;

end

.m File:

want the variable x to be what the user input to be

[Chris]

Is the .m file meant to be called/run by the GUI, or by something else?

[Kuang-Ting Hsueh]

Yes, the .m file is meant to be called by the GUI.

[Stephen23]

Why not just call the function and pass that data as an input argument?

That would be by far the simplest and most efficient approach.

Answer 1

[Chris]

m-file:

function myFun(x)
    
    disp(x);

end

GUI:

Properties
    x
end

function x_valueEditFieldValueChanged(app, event)

        app.x = app.x_valueEditField.Value;
        myFun(app.x);
        
 end

Answer 2

[Vijay]

Hi @Kuang-Ting Hsueh

You can use ‘load’ function to load your desired variable from a matfile into workspace or a structure.

Here is more info on ‘load’ function Load variables from file into workspace - MATLAB load - MathWorks India.

Example:

S = load("matlab.mat"); %S is a structure 
app.EditField.Value = S.myVar;  

Hope this helps!

[Walter Roberson]

They want the opposite. They want the edit field to change one of their variables.

Answer 3

[Walter Roberson]

make x a property of the app. Have your callback do

app.x = app.x_valueEditField.Value;