read a variable in an app designer interface from a Matlab script

Good morning,

I have a question about app designer. I would like make an interface that launches my Matlab script and that this script reads the values of two parameters. I have declared these two variables (A and B for example) in properties in public acces. I use a spinner to define the value of A and B.

In the Spinner function I update the variable this way :

app.A = app.ASpinner.Value;

In my MATLAB script I wanted to use this value for different equations. So I called it that way :

Interface.A; Where Interface is the name of my app designer project.

But I have this error :

ActiveX - invalid PROGID 'A'; Error Code = 800401F3

I instantiated these two variables with a value in the startupFcn function.

So my question is whether it's possible to have a variable coming from an app designer interface in a matlab script.

I can go through a .mat file for this but is ther a more direct method?

Thanks in advance for your help, have a nice day.

Answer 1

[Mohammad Sami]

If you want to be able to access your app inside the script, first create and assign your app to a variable, then you can access its properties.

Example

app = Interface; % this will launch your app.
A = app.A; % now you can get its properties.

[Bastien Binz]

Thank you for your reply. It works now.