TGraph2D Palette : Fix a value to a color

[Wile_E_Coyote]

I guess you should be able to enforce the same “z-range” for all your 2D graphs. For each of them call:

SomeTGraph2D->SetMinimum(MyMinimum);
SomeTGraph2D->SetMaximum(MyMaximum);

Same color palette range for several TH3 drawn with glcolz

I once applied a “brutal fix” to such a problem. I modified all relevant histograms destroying two bins: MyHisto->SetBinContent(1, 1, MyMinimum); MyHisto->SetBinContent(MyHisto->GetNbinsX(), MyHisto->GetNbinsY(), MyMaximum);