Storing arrays with guidata/Userdata

Question

Mason 2023-11-13

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2046862-storing-arrays-with-guidata-userdata

回答： Mason 2023-11-14

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.

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Mason 2023-11-14

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

Mason 2023-11-14

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

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Answer 1

Mason 2023-11-14

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https://ww2.mathworks.cn/matlabcentral/answers/2046862-storing-arrays-with-guidata-userdata#answer_1352542

在 MATLAB Online 中打开

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

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Answer 2

Walter Roberson 2023-11-14

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https://ww2.mathworks.cn/matlabcentral/answers/2046862-storing-arrays-with-guidata-userdata#answer_1351862

在 MATLAB Online 中打开

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;