...[top posting repaired--don't: hard follow conversation makes]...
> "Yuri Geshelin" wrote in message <firstname.lastname@example.org>... >> "Keith Azzopardi" <email@example.com> wrote in message >> <firstname.lastname@example.org>... >> > I have a GUI application where I need to display several pcolor >> plots. I have one graph area and using a scroll bar to display the >> next plot. For each pcolor plot, I am also displaying a quiver plot >> which can be disabled via a radio button. However, the following error >> occurs: >> > > Error using delete >> > Invalid or deleted object. >> > > Snippet: >> > windDirStatus = get(hObject,'Value'); >> > axes(handles.graph); >> > > if (windDirStatus) > windDirection = quiver >> (xaxis,yaxis,windUplot,windVplot); >> > hold on; >> > else >> > % set(windDirection,'Visible','off'); >> > delete(windDirection); >> > > end > > > Can somebody help me with this issue please? >> >> As dpb pointed out, you didn't provide enough information to help you, >> but try the following. Instead of deleting and re-creating the vector >> plot, toggle its 'visible' property between ON and OFF. In any case, >> this seems to be a better strategy, because it will work faster (I >> think).
> Yuri, I tried setting the visibility to false, however the same > error occurs.
Of course--if the handle is invalid, it's invalid for whatever reason/purpose you try to make of it...
> further details > the snippet is in the radio button call back function, thus the > hObject is a handle to the radio button.
I don't write guis, but from the doc's for a radiobutton I find the following--
> If the radio button is selected, its Value property is equal to its > Max property. If the radio button is not selected, it is equal to its > Min property.
I don't know what the Min/Max properties are, but I'm guessing your if() test isn't being satisfied as S Lionel suggested.
The example code snippet in the doc uses a test written as
if (get(hObject,'Value') == get(hObject,'Max')) % Radio button is selected, take appropriate action else % Radio button is not selected, take appropriate action end