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staff.C
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1/// \file
2/// \ingroup tutorial_tree
3/// \notebook -nodraw
4/// Create a plot of the data in `cernstaff.root`
5/// To create `cernstaff.root`, execute tutorial `$ROOTSYS/tutorials/tree/cernbuild.C`
6///
7/// \macro_image
8/// \macro_code
9///
10/// \author Rene Brun
11
12void staff() {
13 auto f = TFile::Open("cernstaff.root");
14 TTree *T = nullptr;
15 f->GetObject("T",T);
16 T->Draw("Grade:Age:Cost:Division:Nation","","gl5d");
17 if (gPad) gPad->Print("staff.C.png");
18}
#define f(i)
Definition: RSha256.hxx:104
#define gPad
Definition: TVirtualPad.h:288
static TFile * Open(const char *name, Option_t *option="", const char *ftitle="", Int_t compress=ROOT::RCompressionSetting::EDefaults::kUseCompiledDefault, Int_t netopt=0)
Create / open a file.
Definition: TFile.cxx:4019
A TTree represents a columnar dataset.
Definition: TTree.h:79
double T(double x)
Definition: ChebyshevPol.h:34
Definition: staff.py:1