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Reference Guide
hsimpleProxyDriver.C
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1/// \file
2/// \ingroup tutorial_tree
3/// \notebook -nodraw
4/// This is the driver of the hsimpleProxy example
5/// It provides the infrastructure to run that code on an ntuple
6/// To be run from the tutorials directory
7///
8/// \macro_code
9///
10/// \author Rene Brun
11
12void hsimpleProxyDriver()
13{
14 std::cout << gSystem->WorkingDirectory() << std::endl;
15 TFile *file = TFile::Open("hsimple.root");
16 if (!file){
17 std::cerr << "Input file not found.\n";
18 return ;
19 }
20 TTree *ntuple = nullptr;
21 file->GetObject("ntuple",ntuple);
22 std::string s1(__FILE__);
23 TString dir = gSystem->UnixPathName(s1.substr(0, s1.find_last_of("\\/")).c_str());
24 ntuple->Draw(dir+"/hsimpleProxy.C+");
25}
#define s1(x)
Definition: RSha256.hxx:91
R__EXTERN TSystem * gSystem
Definition: TSystem.h:559
A ROOT file is a suite of consecutive data records (TKey instances) with a well defined format.
Definition: TFile.h:54
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
Basic string class.
Definition: TString.h:136
virtual const char * UnixPathName(const char *unixpathname)
Convert from a local pathname to a Unix pathname.
Definition: TSystem.cxx:1063
virtual const char * WorkingDirectory()
Return working directory.
Definition: TSystem.cxx:872
A TTree represents a columnar dataset.
Definition: TTree.h:79
void Draw(Option_t *opt) override
Default Draw method for all objects.
Definition: TTree.h:428
Definition: file.py:1