function addMenu(h,hplot)
   
%% Install uimenus on time selection rectangle
for k=1:prod(size(h.SelectionPatch))
      h.Menus = [h.Menus; uimenu('Label','Replace with NaNs','Parent', ...
          get(h.SelectionPatch(k),'Uicontextmenu'),'Callback',...
          @(es,ed) delselection(hplot));
          uimenu('Label','Remove selection','Parent', ...
          get(h.SelectionPatch(k),'Uicontextmenu'),'Callback',...
          @(es,ed) rmselection(hplot))];
end