I would like to know how would I load a structured variable from a matfile into AppDesigner?

function LoadButtonPushed(app, event)
            loadedPdp = load("C:\Users\HelloWorld\Desktop\AppDesigner\Draft 8\matlab.mat",'pdp'); %change the directory accordingly
            app.loadedData = loadedPdp.pdp; %Assign loaded data to 'app.loadedData'

The structure I am trying to load is pdp.

Answer 1

[Ayush]

Hey Suhas,

I understand that you want to load a structured variable into App Designer and the structure is pdp.

You can follow these steps for the same:

1. Start by opening your App Designer project.
2. In App Designer, go to the "Code View" tab. You can find it in the upper-right corner of the App Designer window.
3. Inside the "Code View" tab, locate the “startupFcn” function. This function is executed when the app starts.
4. Within the “startupFcn” function, you can use the following code to load the structured variable from the MAT file.

    % Load the MAT file
    data = load('fileName.mat');
    % Access the structured variable (pdp in this case)  
    pdp = data.pdp;

This will help you access the pdp variable within your App Designer project.

For more information, you can refer the documentation for App Designer: Develop Apps Using App Designer - MATLAB & Simulink - MathWorks India

Hope this helps!!

[Suhas Ramanan]

Hi Ayush,

Thanks for your answer! I also realised we need to include it in the properties like this. But yes, you're right!

properties (Access = private)
        % Property to store loaded double variable VERY IMPORTANT else it will not be recognised as a class in this app
        loadedData struct