How to update a new created structure inside GUI

I am making a GUI, and would like to create a new structure and be able to use it within the GUI script to add new fields after different events of different components of the GUI.

I have created the structure in the opening function as follows:

patient = struct();

After debugging, I realized the structure would be erased after the opening function. I try different forms of guidata() function to update it, but cannot seem to find an answer.

Answer 1

[Pranjal Kaura]

Hey,

You can use the properties functionality in App designer to be able to use variables within your GUI/App script. Declaring a variable 'patient' within the 'startUpFcn' callback, would only make it a local variable (to the 'startUpFcn' function) and thus it would not be visible/accessible to the rest of your code.

You need to set 'patient' as a private/public property of the App, to be able to access it withtin the App. You can learn more about sharing data withtin Apps using the documentation.

Hope this helps!