App designer - How to index multiple variable names?

Hello, i am trying to build a game of Mastermind in matlab app designer.

I have 40 lamps arrainged in 4 columns, and i would like to put them into a cell matrix to referance them more easily to manipulate them. This way i would only have 6 if statements instead of 40 just for changing their color, but i cannot figure out how to do this.

Making a global variable lamps = {lamp_1, lamp_2, lamp_3 etc. or {app.lamp_1, app.lamp_2, etc. doesn't seem to work.

I've tried naming them L101, L102, L201, L202 and trying app.(['L'+num2str('index')]).color = app.white; to no avail.

Anyone know how to do this better?

Answer 1

[Mohammad Sami]

You should add a private property called AllLamps. Then add startupFcn to define this property.

% Code that executes after component creation
function startupFcn(app, varargin)
    app.AllLamps = {app.Lamp app.Lamp2 app.Lamp3 app.Lamp4;...
        app.Lamp5 app.Lamp6 app.Lamp7 app.Lamp8};
end

The you can use it to change the "Color" property as follows.

function ButtonPushed(app, event)
    row = 2;
    col = 2;
    app.AllLamps{row,col}.Color = 'red';
end

[Zane Winyard]

Thanks a lot! Cut 1000+ if statements down to about 8 lines lol