Dear Rooters, what mistake do i make: Running : { TCanvas *c1 = new TCanvas("data1",""); c1->SetLogx(1); c1->Draw(); TH1F *h2 = new TH1F("","",1, 0.01, 1); h2->SetMaximum(10); Float_t x[4]= { 0.1, 0.2, 0.4, 0.5 }; Float_t y[3]= { 1.1, 1.2, 1.4 }; h2->Draw(); TH1F *h = new TH1F("","",3, x); h->SetBinContent(1,y[0]); h->SetBinContent(2,y[1]); h->SetBinContent(3,y[2]); h->Draw("same"); } gives: Error in <TGraph::PaintGraphHist>: X must have N+1 values with option N but it has ... 3 bins -> 4 x-values Ciao Thomas ---------------------------------------------------------------------------- Thomas Hadig, Ottensen, Donnerstr. 20, 22763 Hamburg Tel. +49 40 39901186 OFFICE : DESY/H1, 1a334, Notkestr. 85, 22607 Hamburg Tel. +49 40 8998 2733 hadig@rwth-aachen.de Handy +49 170 7807434 http://www-h1.desy.de/~hadig/ FAX +49 40 8998 4385 ---------------------------------------------------------------------------- PLEASE NOTE THE NEW OFFICE, OFFICE PHONE AND MOBILE PHONE !!!!! ----------------------------------------------------------------------------
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