Storing arrays with guidata/Userdata

Im having a hard time wrapping my head around how I might go around storing an array for later use using my gui. I want to be able to store an array called LN using a pushbutton but im not entirely sure how to tackle it. I dont need anything too complex I just want to be able to see an example and figure out where to start. Ive looked over guidata and Userdata functions. I came to the conclusion guidata may be more functional for my current project, but other than using it within a figure, im not sure how to store LN with the press of the pushbuttons I have.

[Walter Roberson]

Are you using App Designer or GUIDE or building your own code?

[Mason]

Im building my own code using uicontrol and push buttons

[Stephen23]

If you are writing your own GUI then by using nested functions you can easily avoid this whole GUIDE-based indirection of using GUIDATA.

[Mason]

How might I go about that? Everytime a new value is input LN is reset to zero

[Mason]

Actually I figured it out, i just had to move a value outside the function

Answer 1

[Mason]

I figured out how to save data without gui data. It was as simple as using "persistent" in my function.

Although it may not be the best way, it works as I need it to.

function NumberBook(CT,T) % <- pass LN to the function
persistent LN
    if T == -1
    clear LN
    elseif CT == 1 % Start of counter
    LN = zeros(1,10); % Allocated space | 10 Digit restriction (Implimented later on)
    
        N = zeros(1,10);

    N(CT) = T; % Adds number to array
    LN = LN + N;
    disp(LN)

    elseif CT >= 1

    N = zeros(1,10);

    N(CT) = T; % Adds number to array
    LN = LN + N;
    disp(LN)

    end
end

Giving me an actual number when a number is inputted, rather than just being zeros and a new value.

ans = 
     6     2     2     3     2     3     5     0     0     0

ans = 
     6     2     2     3     2     3     5     0     1     0

ans =
     6     2     2     3     2     3     5     0     1     6

Answer 2

[Walter Roberson]

function Myproj_Button1_Callback(hObject, event, ~)
  handles = guidata(hObject) ;
  handles.LN = magic(7);
  guidata(hObject, handles);

function Myproj_GoButton(hObject, event, ~) 

    handles = guidata(hObject);
    LN = handles.LN;

If you are using guide then some simplifications are possible