Hi all, I'm still struggling with TGrap objects. The current problem is: I want to read several TGraph object from a file, draw them in a specified X-Axis range to write them into an .eps file. I'm doing the following: graph[1] = (TGraphErrors*) myfile->Get("name_of_graph_no_1"); mypad->cd(); graph[1]->Draw("AP"); mypad->Modified(kTRUE); myPad->Update(); and now, to get access to the Xaxis, I say TH1F *h = TGraph->GetHistogram(); because I want to do something like h->SetRange(...); However, the returned pointer h is NULL. Is there maybe a different method to change a graphs axis? Or am I missing a neccessary command to get the histogram inside the graph created? Thanks & Cheers, _ |om ------------------------------------------------------------------------ - Thomas Feser - - - - Institut fuer Physik phone: +49-6131-39-25165 - - ETAP/AMANDA fax: +49-6131-39-25169 - - Staudingerweg 7 / 04-426 - - D-55099 Universitaet Mainz - - - - Thomas.Feser@uni-mainz.de - - http://iphcip1.physik.uni-mainz.de/~tfeser - ------------------------------------------------------------------------
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