Try:
h4bprof->SetAxisRange(8, 20, “Z”);
and/or:
h4bprof->GetZaxis()->SetRangeUser(8, 20);
Actually, I believe this should work as well:
h4bprof->SetMinimum(8);
h4bprof->SetMaximum(20);
See also:
[url]SetAxisRange(0.0,1.0,“Y”); is ineffective
[url]Drawing a TGraphAsymmErrors
BTW. You have a typo in your “tree.c” file in line 356 … “SetMinimun” does NOT exist at all (note that the last character in this name is a “n” instead of a “m”) … I think that’s where your problem originates …