How do I load a previously saved mat-flie into a GUI?

By using the GUIDE function in matlab, a GUI is run that prompts user for double input, and then saved as a .mat file. I want to load this file in another GUI.

Here is the relevant code from the first GUI:

function wallet_Callback(hObject, eventdata, handles)

valid = false; while valid == false myText = get(hObject, 'String'); temp = str2double(myText); if temp <10000.0 && temp > 1.0 playSound('002'); pause(0.5); save('walletSum.mat', 'myText'); valid = true; else disp('Input error.'); playSound('003'); pause(0.5); break end end guidata(hObject, handles);

This works, though clumsy it is. However, when I later want to load the m.file by:

function insert_bet_Callback(hObject, eventdata, handles)

bet = get(hObject, 'String'); % temp2 =load(walletSum___);

temp1 = str2double(bet); %temp2 = str2double(temp2);

if temp2>temp1 && temp1<0 %CheckSum<walletSum

    playSound('003');
    pause(0.5);
    disp('Input error.');
    else bet = temp1;
    tempSum = temp2-temp1; %Withdraw money

    walletSum = num2str(tempSum);
    save('walletSum.txt', 'myText')
    save('betSize', 'bet')
    disp('WARNING: Bet subtracted from wallet.');

end guidata(handles.current_data);

I've put '%' because of the errors, until I would find a solution but I can't, and I can no longer ignore it. I get the "Undefined function or variable "walletSum"." - error. I'm obviously quite new to matlab, so forgive me for my ignorance.

If you could help me find a way so: The walletSum - bet is possible, and saved back into the same file, that would be great.

Thank you.

Answer 1

[John Petersen]

Instead of

temp2 = load(walletSum___);

try

load walletSum.mat

or try

wS = load(walletSum.mat);
temp2 = wS.myText;

If you can, next time give the exact error that is displayed.