Hi, I have two histograms in my canvas and want to define one color palette per histogram, e.g. the colors in the first histogram go from black to white and in the second from white to black. Unfortunately setting the style via gStyle->SetPalette() changes the palettes in all histograms. Is there any function of type H1D->SetStyle(myStyle) which is unharmed when one sets gStyle-values? Here is an example of the problem: ////////////////////////////////////////////////////////////////////// { gROOT->Reset(); TRandom R; gRandom->SetSeed(); const Int_t kUPDATE = 1000; c1 = new TCanvas("c1","Canvas",200,200,600,1000); pad1 = new TPad("pad1","Palette 1",0.05,0.50,0.95,0.95,21); pad2 = new TPad("pad2","Palette 2",0.05,0.05,0.95,0.45,21); pad1->Draw(); pad2->Draw(); pad1->cd(); Int_t Color[9] = {10, 19, 18, 17, 16, 15, 14, 13, 12}; gStyle->SetPalette(9, Color); //pad1->UseCurrentStyle(); TH2D* H1 = new TH2D("H1", "Palette 1", 50,-5,5,50,-5,5); H1->Draw("CONT4"); for (Int_t i = 0; i < 10000; i++) { H1->Fill(gRandom->Gaus(), gRandom->Gaus()); if (i % kUPDATE == 0) { pad1->Modified(); c1->Update(); } } pad2->cd(); Int_t invColor[9] = {12, 13, 14, 15, 16, 17, 18, 19, 10}; gStyle->SetPalette(9, invColor); //pad2->UseCurrentStyle(); TH2D* H2 = new TH2D("H1", "Palette 1", 50,-5,5,50,-5,5); H2->Draw("CONT4"); for (Int_t i = 0; i < 10000; i++) { H2->Fill(gRandom->Gaus(), gRandom->Gaus()); if (i % kUPDATE == 0) { H2->Draw("CONT4"); pad2->Modified(); c1->Update(); } } // Together: for (Int_t i = 0; i < 10000; i++) { H1->Fill(gRandom->Gaus(), gRandom->Gaus()); H2->Fill(gRandom->Gaus(), gRandom->Gaus()); if (i % kUPDATE == 0) { pad1->Modified(); pad2->Modified(); c1->Update(); } } pad1->Modified(); pad2->Modified(); c1->Update(); } ////////////////////////////////////////////////////////////////////// Any ideas? Andreas ---------------------------------------------------------------------- Andreas Zoglauer MPI fuer extraterrestrische Physik Phone: +49/89-30000-3848 Postfach 1312 Fax: +49/89-30000-3569 85741 Garching, Germany Email: zog@mpe.mpg.de ----------------------------------------------------------------------
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