Under what circumstances does LEGO2 produce colored plots? I have a bunch of different histograms some of which come out as expected (i.e in color) and the others are just plain black with the actual structure barely visible. Can I know what I am missing?
c1->cd(1); eta->Draw("LEGO2"); // ... other plots c2->cd(1); phi->Draw("LEGO2");
eta comes out in all balck, while
phi is normal.