MATLAB: Break loop with button click Appdesigner GUI [Both plot and button are in different callback functions]

for loopMATLABmatlab functionmatlab gui

I have a GUI MATLAB
I have a button
and there is a loop like this
function RUN()
t=1:0.01:3600;
for i=1:numel(t)
    y(1,i)=readValue();
    plot(t(1:i),Tco(1:i));
    pause(0.02)
end
end
function BUTTON_PRESS()
   %BREAK FROM THAT LOOP
end
I want to break this loop when I click my button

Best Answer

function main
FigH    = figure;
ButtonH = uicontrol(FigH, 'Style', 'PushButton', 'String', 'Stop', 
                    'Callback', @ButtonPressed, 'UserData', 0);
RUN(ButtonH);
end
function ButtnPressed(ButtonH, EventData)
ButtonH.UserData = 1;
end
function RUN(ButtonH)
t = 1:0.01:3600;
for i = 1:numel(t)
    y(1,i) = readValue();
    plot(t(1:i), Tco(1:i));
    pause(0.02);
    if ButtonH.UserData
        break;
    end
end
end
If there is really no chance to obtain a clean providing of the button's handle, use the tag to find it dynamically - but this is less nice:
function main
FigH    = figure;
ButtonH = uicontrol(FigH, 'Style', 'PushButton', 'String', 'Stop', ...
    'Callback', @ButtonPressed, 'UserData', 0, ...
    'Tag', 'myUniqueButtonTag_in: main.m');
RUN();
end
function ButtnPressed(ButtonH, EventData)
ButtonH.UserData = 1;
end
function RUN()
ButtonH = findobj(allchild(groot), 'Tag', 'myUniqueButtonTag_in: main.m');
... same as above
end
Care for the situation, where two figures are existing or none, e.g. by:
function RUN()
ButtonH = findobj(allchild(groot), 'Tag', 'myUniqueButtonTag_in: main.m');
if numel(ButtonH) > 1
    warning('Multiple stop buttons found.')
end
...
    if ~isempty(ButtonH) && any([ButtonH.UserData])
end
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