In running the following script in both ROOT 3.10.02 and 4.00.08 on linux - the first time it is run - the x-axis is not updated… if we go ahead and run the full script a second time… the x-axis is updated and populated.
What are we doing wrong?
{
gROOT->Reset();
TFile f("/nfs/farm/g/glast/u01/italyOneTower/em_v3r0404p2/306000163/041008101639_svac.root", “READ”);
gStyle->SetTimeOffset(0);
TCanvas* c1 = new TCanvas;
Output->Draw(“TkrNumTracks:EvtSecond”, “”, “goff”, 100);
//Output->Draw(“TkrNumTracks:VtxZDir”, “TkrNumTracks>0”, “goff”, 100);
TGraph* gr = new TGraph(Output->GetSelectedRows(), Output->GetV2(), Output->GetV1());
gr->Draw(“A*”);
gr->GetXaxis()->SetTimeDisplay(1);
gr->GetXaxis()->SetTimeFormat("%H-%M");
gPad->Modified();
}