Hello. I need to do a very simple task .......... TGraph *graph = new TGraph(point, x,y); graph->SetTitle("some title"); graph->GetYaxis()->SetTitle("some title01"); // this does not appaer in my graph ......... graph->Draw("AL*"); return graph; Did I miss anything, in the Draw options, maybe? M…

graph->GetXaxis()->CenterTitle(true);

Maybe you could try this (I get no problem with the “new Y axis title”): #include "TGraph.h" #include "TAxis.h" TGraph * title(void) { Double_t x[10] = {0,1,2,3,4,5,6,7,8,9}; Double_t y[10] = {9,8,7,6,5,4,3,2,1,0}; TGraph *graph = new TGraph(10, x, y); graph->SetTitle("graph title"); // …

the problem not solved. it does not complain however. I have both the includes, and this sequence : ............ graph->SetTitle("graph title"); graph->GetYaxis()->SetTitle("new Y axis title"); graph->Draw("AL*"); return graph

Maybe you could try: graph->GetHistogram()->GetYaxis()->SetTitle("new Y axis title");

Messages in response to above: Error: Failed to evaluate graph->GetHistogram() Error: Failed to evaluate graph->GetHistogram()->GetYaxis() Error: Failed to evaluate graph->GetHistogram()->GetYaxis()->SetTitle(“new Y axis title”)

Try to run this (again, I get no problem with the “new Y axis title”): #include "TGraph.h" #include "TAxis.h" #include "TH1.h" TGraph * title(void) { Double_t x[10] = {0,1,2,3,4,5,6,7,8,9}; Double_t y[10] = {9,8,7,6,5,4,3,2,1,0}; TGraph *graph = new TGraph(10, x, y); graph->SetTitle("graph…

the same set of errors. yes, all includes are present.

What’s you ROOT version, Operating System version, compiler version? (I tried ROOT 5.28 and 5.34 on Linux i686 and x86_64 and gcc 4.4.[36].) Well, maybe you need to report a bug.

root 5.20 Linux version 2.6.18-238.12.1.el5 ( brewbuilder@norob.fnal.gov ) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-50)) #1 SMP gcc version 4.1.2 20080704 (Red Hat 4.1.2-50)

This macro works for me on Mac with the ROOT trunck: { Double_t x[10] = {0,1,2,3,4,5,6,7,8,9}; Double_t y[10] = {9,8,7,6,5,4,3,2,1,0}; TGraph *graph = new TGraph(10, x, y); graph->SetTitle("graph title"); graph->GetHistogram()->GetYaxis()->SetTitle("new Y axis title"); graph->Draw("AL*"…

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