Running a matlab file within appdesigner pushbutton

I would like to run a matlab file, which is a program that has several steps including: uses data from text files, multiple functions, and requires some initial user inputs before executing. I have looked up how to do this and I feel like I have already given this enough tries already. I am currently at my callback function to run the program and I really do not understand why the code does not work.

% Button pushed function: RunButton
function RunButtonPushed(app, event)
a = app.aEditField.Value;
b = app.bEditField.Value;
c = app.cEditField.Value;
matrix = [a, b, c];
result = program(matrix);
end

The user puts in 3 numbers, then presses the button and it should work, but the error code is:

Error: File: appname.mlapp Line: 151 Column: 9

Function definition are not supported in this context. Functions can only be

created as local or nested functions in code files.

and for some reason, I also have another error in part of the appdesigner code that I am not able to manipulate, as far as I know:

% Component initialization
methods (Access = private)

Line 199: Parse error at METHODS: usage might be invalid MATLAB syntax.

Answer 1

[Rik]

This is likely due to an extra or missing end statement. Once such fundamental delimiters get mismatched, the syntax error may be reported in an unrelated section of the code. You will need to post the entire file (attach it to a comment) if you want me to help you find the place where you should apply the fix.

[I]

Thanks, I just read what you said and found where I missed an end statement, but now I am trying to figure out how to run the matlab code within appdesigner

[Rik]

The only thing I can see wrong with your code is that you don't store the results anywhere. Other than that, this is the way to call external functions.

I don't know whether AppDesigner allows you to put an external function at the end of the class definition, but that might also be possible.

[I]

Here is the code at the end of appdesigner:

    % App creation and deletion
    methods (Access = public)

        % Construct app
        function app = GUIre

            % Create UIFigure and components
            createComponents(app)

            % Register the app with App Designer
            registerApp(app, app.UIFigure)

            if nargout == 0
                clear app
            end
        end

        % Code that executes before app deletion
        function delete(app)

            % Delete UIFigure when app is deleted
            delete(app.UIFigure)
        end
    end
end

Do you mean that I should put my code related to my matlab program between the last two end statements? I don't know how I would do that since this is automatically generated code and the area is grayed out so I cannot edit it.

[Rik]

I meant you should put your function after the last end statement, but if you can't put anything there, you can't do that in AppDesigner.

[I]

Do you mean I cannot run a matlab program within appdesigner? I was developing an interface for this exact purpose.

[Rik]

Of course you can, you can call it the same way as any other function: as long as it exists on the path you can just use its name. Exactly like you showed in the snippet in your question. The only thing I notice you should change in that snippet is that you do not store the output of that function anywhere (i.e., the variable result is destroyed when the method returns, miliseconds after it is created).