function[e] = remove_aggregate(e)

fig = e.handle(2);
figure(fig);

group_list = findobj('Tag', 'group_list');

selected_group = get(group_list, 'Value')

%e.aggregates(selected_group) = [];
for i =selected_group+1:length(e.aggregates)
    e.aggregates(i) = e.aggregates(i-1);
end
e.aggregates(end) = [];

e.update_aggregates;