Hi Laurent, You may get some inspiration from the two macros in attachment Rene Brun Laurent APHECETCHE wrote: > > Hi Rooters, > > I would like to plot 2 histograms which share the same x-axis : > > --------------- > | | > | | > | | > --|--|--|--|--- > | | > | | > | | > --------------- > > I've tried to use TCanvas::Divide and play with the margins, but I > failed. > Any help ? > > Thanks. > -- > Dr. Laurent APHECETCHE (mailto:aphecetc@in2p3.fr) | TAPS/PHENIX/ALICE > SUBATECH-Ecole des Mines de Nantes-4 rue Alfred Kastler-44070 NANTES > cedex 03 > TEL (+33/0) 2 51 85 84 17 - FAX (+33/0) 2 51 85 84 24 (France) > http://www-subatech.in2p3.fr/~photons - > http://www.phenix.bnl.gov/~aphecetc { gROOT->Reset(); TCanvas c1("c1","multipads",700,700); gStyle->SetPadBorderMode(0); gStyle->SetFrameBorderMode(0); Float_t small = 1e-5; c1.Divide(1,2,small,small); TH1F h1("h1","test1",40,-4,4); TH1F h2("h2","test2",40,-4,4); h1.FillRandom("gaus",1000); h2.FillRandom("gaus",1000); c1.cd(1); gPad->SetBottomMargin(small); h1.Draw(); c1.cd(2); gPad->SetTopMargin(small); gPad->SetTickx(); h2.Draw(); } { gROOT->Reset(); TCanvas c1("c1","multipads",700,700); gStyle->SetPadBorderMode(0); gStyle->SetFrameBorderMode(0); Float_t small = 1e-5; c1.Divide(2,2,small,small); TH1F h1("h1","test1",40,-4,4); TH1F h2("h2","test2",40,-4,4); TH1F h3("h3","test3",40,-4,4); TH1F h4("h4","test4",40,-4,4); h1.FillRandom("gaus",1000); h2.FillRandom("gaus",1000); h3.FillRandom("gaus",1000); h4.FillRandom("gaus",1000); c1.cd(1); gPad->SetBottomMargin(small); gPad->SetRightMargin(small); h1.Draw(); c1.cd(2); gPad->SetBottomMargin(small); gPad->SetRightMargin(small); gPad->SetLeftMargin(small); h2.Draw(); c1.cd(3); gPad->SetTopMargin(small); gPad->SetRightMargin(small); gPad->SetTickx(); h3.Draw(); c1.cd(4); gPad->SetTopMargin(small); gPad->SetRightMargin(small); gPad->SetLeftMargin(small); gPad->SetTickx(); h4.Draw(); }
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