I have 2 2D histos, both with minimum = 0 and max = 1.
If I add those histos there is no problem.
If I subtract them, I can’t plot them anymore with any 2D options.
3D visualization however is fine.
What is strange is that I can 2D plot this:
Eff->Add(HH[1], HH[0], 1.0, -0.99999);
but I can’t 2D plot this:
Eff->Add(HH[1], HH[0], 1.0, -1.0);
mauri