Draw 1D histograms as bar charts
{
gROOT->ProcessLineFast(
"tree500_cernbuild()");
}
if (!file) {
Error(
"hist006_TH1_bar_charts",
"file cernstaff.root not found");
return nullptr;
}
if (!tree) {
Error(
"hist006_TH1_bar_charts",
"Tree T is not present in file %s", file->GetName());
return nullptr;
}
curPad->SetFrameFillColor(33);
tree->Draw(
"Nation",
"",
"hbar2");
curPad->SetFrameFillColor(33);
tree->Draw(
"Division>>hDiv",
"",
"goff");
tree->Draw(
"Division>>hDivFR",
"Nation==\"FR\"",
"goff");
legend->AddEntry(h2,
"French only",
"f");
}
ROOT::Detail::TRangeCast< T, true > TRangeDynCast
TRangeDynCast is an adapter class that allows the typed iteration through a TCollection.
void Error(const char *location, const char *msgfmt,...)
Use this function in case an error occurred.
Option_t Option_t TPoint TPoint const char GetTextMagnitude GetFillStyle GetLineColor GetLineWidth GetMarkerStyle GetTextAlign GetTextColor GetTextSize void char Point_t Rectangle_t WindowAttributes_t Float_t Float_t Float_t Int_t Int_t UInt_t UInt_t Rectangle_t Int_t Int_t Window_t TString Int_t GCValues_t GetPrimarySelectionOwner GetDisplay GetScreen GetColormap GetNativeEvent const char const char dpyName wid window const char font_name cursor keysym reg const char only_if_exist regb h Point_t winding char text const char depth char const char Int_t count const char ColorStruct_t color const char filename
R__EXTERN TSystem * gSystem
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.
1-D histogram with a float per channel (see TH1 documentation)
TH1 is the base class of all histogram classes in ROOT.
This class displays a legend box (TPaveText) containing several legend entries.
virtual Bool_t AccessPathName(const char *path, EAccessMode mode=kFileExists)
Returns FALSE if one can access a file using the specified access mode.
A TTree represents a columnar dataset.
- Date
- November 2024
- Author
- Rene Brun
Definition in file hist006_TH1_bar_charts.C.