Error in Timer function
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Hi I am just testing how Timer function works in GUI. I have an older script from google search.
Basically i have created an timer and when the gui opens it should update the edit box with an random number.
function figure1_CreateFcn(hObject, eventdata, handles)
handles.guifig = gcf
handles.tmr = timer('TimerFcn',...
{@TmrFcn,handles.guifig},'BusyMode','Queue',...
'ExecutionMode','FixedRate','Period',2);%timer updating after every 2 secs
guidata(handles.guifig,handles);
start(handles.tmr);
guidata(hObject, handles);
%Timer Function
function TmrFcn(src,event,handles) %Timer function
handles = guidata(handles)
x = rand%define your function here
set(handles.edit1,'value',num2str(x));
guidata(handles.guifig, handles);
Im getting error ' Reference to non-existent field 'edit1'.
Can any one help me in solving this.
Réponses (2)
Image Analyst
le 13 Juil 2012
In GUIDE, look at the "Tag" property of the edit fields on your GUI. You don't have any that have the "tag" of "edit1".
2 commentaires
Image Analyst
le 14 Juil 2012
Modifié(e) : Image Analyst
le 14 Juil 2012
Same answer. See where it says "Reference to non-existent field 'edit1'." The variable "handles" exists but it has no field called edit1. That means you don't have a control on your GUI called edit1, just like I first said. Look again at the tag property of all your edit fields on your GUI.
Sean de Wolski
le 13 Juil 2012
Modifié(e) : Sean de Wolski
le 13 Juil 2012
Is this occuring because you close the GUI without stopping the timer?
In the closeRequestFcn of the GUI, be sure to have a:
t = timerfindall;
is ~isempty(t)
stop(t);
delete(t);
end
2 commentaires
Sean de Wolski
le 13 Juil 2012
Nevermind. Probably not the case because the field doesn't exist. You would get an error "invalid or deleted object" here I would think.
Image Analyst
le 14 Juil 2012
Modifié(e) : Image Analyst
le 14 Juil 2012
I agree with Sean - and the field does not exist because the edit text box called "edit1" (meaning the tag property = edit1) simply does not exist on the GUI.
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