plot(handles.axes1, y0,'--','LineWidth',2,'Color','g');
grid(handles.axes1, 'on');
ylim(handles.axes1, [0 100]);
plot(handles.axes2, y1,'--','LineWidth',2,'Color','g');
grid(handles.axes2, 'on');
ylim(handles.axes2, [0 100]);
drawnow(); %instead of pause
Also you can remove the
handles=guidata(hObject);
and the
guidata(hObject,handles);
as you are not changing the handles structure, unless you are doing so in a routine you have not shown here. I do see your tests against handles.port_stt which suggest that you might be doing so (if you do have something going on in the background like that, you need to worry that it is maximizing your figure). If you do have a control that is determining the state of port_stt then it might make sense to fetch the updated guidata, but it would be more efficient to make the state a property of a control and only check the property (even if it is a UserData property): every time you fetch guidata() you are fetching all of the structure. Also, remember if something external is updating the handles structure then it is updating the "master" copy of the structure so there is no need for you to update the master handles structure with the same values -- and if you do update the master structure then you run into the risk of race conditions where the other one has updated guidata but you have not received that update yet so you accidentally overwrite with the old value.
