wolffd@0: function c = plus(a,b)
wolffd@0: 
wolffd@0: d = get(a,'Data');
wolffd@0: e = get(b,'Data');
wolffd@0: f = cell(1,length(d));
wolffd@0: p = get(a,'Time');
wolffd@0: q = get(b,'Time');
wolffd@0: r = cell(1,length(d));
wolffd@0: l = get(a,'Name');
wolffd@0: m = get(b,'Name');
wolffd@0: n = cell(1,length(l));
wolffd@0: for i = 1:length(d)
wolffd@0:     f{i} = cell(1,length(d{i}));
wolffd@0:     for j = 1:length(d{i})
wolffd@0:         ld = size(d{i}{j},1);
wolffd@0:         le = size(e{i}{j},1);
wolffd@0:         if ld > le
wolffd@0:             r{i}{j} = p{i}{j};
wolffd@0:             f{i}{j} = d{i}{j} + [e{i}{j};zeros(ld-le,size(e,2),size(e,3))];
wolffd@0:         else
wolffd@0:             r{i}{j} = q{i}{j};
wolffd@0:             f{i}{j} = [d{i}{j};zeros(le-ld,size(d,2),size(d,3))] + e{i}{j};
wolffd@0:         end
wolffd@0:     end
wolffd@0:     n{i} = [l{i} '+' m{i}];
wolffd@0: end
wolffd@0: c = set(a,'Pos',r,'Data',f,'Name',n);