Break loop with button click Appdesigner GUI [Both plot and button are in different callback functions]
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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
0 Comments
Accepted Answer
Jan
on 24 Nov 2020
Edited: Jan
on 24 Nov 2020
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
4 Comments
More Answers (1)
Voss
on 23 Nov 2020
You can define a variable that says whether the button has been clicked. Set the value of that variable in your button's callback function. Check the value of that variable on each iteration of your for loop, and if it says the button has been clicked, break out of the loop.
6 Comments
Rik
on 1 Dec 2020
Changing the name will not solve anything if your code is not working in the first place. It is a good habit.
Instead of holding down the shift button while typing on this forum (which is considered SHOUTING and impolite), did you try using breakpoints to debug your code?
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