"Keith Azzopardi" <email@example.com> wrote in message news: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?
There's no guarantee that windDirStatus has been true, and QUIVER been called to create a new plot, between two calls to DELETE. You will probably want to keep track of that and only DELETE if a new graphic to delete was created.