selectedItem = get(handles.popupMenu, 'Value')
if selectedItem == 1;
% Display the red shape
elseif selectedItem == 2
% Display the green shape
elseif selectedItem == 3
% Display the blue shape
end
Display the shapes with whatever function you're using, for example patch() or fill(). If you're trying to do color segmentation from an RGB image, then see my color segmentation demos for ways to extract pixels of just certain colors from the image. http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862
