Dear Rooters, I have a problem with version ROOT 2.22 in drawing Functions (TF1) with logarithmic scales. The code included below works fine on version, * Version 2.21/06 18 February 1999 * but with version * Version 2.22/10 28 July 1999 * i get the following message Error in <TGraph::PaintGraphHist>: X must have N+1 values with option N when the line y09->Draw("same") is executed. In addition, the line is not drawn up to the end. Ciao and thanks in advance Thomas h1kine() { TCanvas *c = new TCanvas("a",""); c->SetLogx(); c->SetLogy(); c->Draw(); TH1F *h = new TH1F("d","d", 1, 0.0006, 0.4); h->SetMaximum(7000); h->SetMinimum(50); h->Draw(""); // iso y lines TF1 *y09 = new TF1("y09","0.9*4*27.5*820*x",.0006158,.0862281); y09->SetLineWidth(1); y09->Draw("same"); c->Update(); } Ciao Thomas ---------------------------------------------------------------------------- Thomas Hadig, Ottensen, Donnerstr. 20, D-22763 Hamburg (+49 40 39901186) office : I. Phys. Institut AAC, Room 1c354, Notkestr. 85, D-22607 Hamburg hadig@rwth-aachen.de Tel. +49 40 8998 2312 http://www-h1.desy.de/~hadig/ FAX +49 40 8998 4385 ---------------------------------------------------------------------------- Windows - the user friendly interface! Brought to you by the makers of EDLIN ----------------------------------------------------------------------------
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