TGraph2D

ROOT
1

Dear Rooters:
I am wondering about how to put labels on to my 3D graph produced by TGraph2D. Below is how I have tried to include labels but does not work.

TCanvas *c4 = new TCanvas(“c4”, “Graph Draw Options”, 200, 10, 600, 400);
TGraph2D *tgraphI = new TGraph2D(“tgraphI”, “”, Nevents, w, y, z);
//tgraphI->SetTitle(“three dimensional plot” );
tgraphI->GetXaxis( )->SetTitle(“CosThetaZ”);
tgraphI->GetYaxis( )->SetTitle(“Energy”);
tgraphI->GetZaxis( )->SetTitle(“Probability”);
tgraphI->Draw(“surf1”);

Thank you,
~karla

2

You can use the TGpah2D method:

TH2D *GetHistogram

to get a TH2 from the TGpah2D. Then change the titles etc… on the TH2 and plot it with option SURF1 (as you do now)

3

The following functions have been added to TGraph2D in CVS:
TAxis *GetXaxis() const ;
TAxis *GetYaxis() const ;
TAxis *GetZaxis() const ;

Rene