ROOT
6.14/05
Reference Guide
tutorials
tree
staff.C
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/// \file
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/// \ingroup tutorial_tree
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/// \notebook -nodraw
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/// Create a plot of the data in `cernstaff.root`
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/// To create `cernstaff.root`, execute tutorial `$ROOTSYS/tutorials/tree/cernbuild.C`
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///
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/// \macro_image
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/// \macro_code
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///
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/// \author Rene Brun
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void
staff
() {
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auto
f
=
TFile::Open
(
"cernstaff.root"
);
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TTree
*
T
=
nullptr
;
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f
->GetObject(
"T"
,T);
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T->
Draw
(
"Grade:Age:Cost:Division:Nation"
,
""
,
"gl5d"
);
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if
(
gPad
)
gPad
->Print(
"staff.C.png"
);
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}
ROOT::Math::Chebyshev::T
double T(double x)
Definition:
ChebyshevPol.h:34
f
#define f(i)
Definition:
RSha256.hxx:104
TFile::Open
static TFile * Open(const char *name, Option_t *option="", const char *ftitle="", Int_t compress=1, Int_t netopt=0)
Create / open a file.
Definition:
TFile.cxx:3976
staff
Definition:
staff.py:1
TTree::Draw
virtual void Draw(Option_t *opt)
Default Draw method for all objects.
Definition:
TTree.h:357
gPad
#define gPad
Definition:
TVirtualPad.h:285
TTree
A TTree object has a header with a name and a title.
Definition:
TTree.h:70