Fill multiple histograms with different functions and automatic binning.
Illustrates merging with the power-of-two autobin algorithm
OBJ: TStatistic min Mean = -0.22134 +- 0.1027 RMS = 0.3249 Count = 10 Min = -0.60956 Max = 0.35825
OBJ: TStatistic max Mean = 6.1058 +- 0.1191 RMS = 0.3767 Count = 10 Min = 5.545 Max = 6.7051
OBJ: TStatistic dif Mean = 6.3271 +- 0.1382 RMS = 0.43695 Count = 10 Min = 5.465 Max = 6.8066
OBJ: TStatistic mean Mean = 2.9995 +- 0.008999 RMS = 0.028458 Count = 10 Min = 2.9629 Max = 3.0429
OBJ: TStatistic rms Mean = 1.0029 +- 0.009787 RMS = 0.03095 Count = 10 Min = 0.95685 Max = 1.0357
ent: 10010
TH1.Print Name = myh0, Entries= 10010, Total sum= 9999
TH1.Print Name = myhref, Entries= 10010, Total sum= 10004
TF1 *gam =
new TF1(
"gam",
"1/(1+0.1*x*0.1*x)", -100., 100.);
TF1 *gam1 =
new TF1(
"gam",
"1/(1+0.1*x*0.1*x)", -1., .25);
TF1 *iga =
new TF1(
"inv gam",
"1.-1/(1+0.1*x*0.1*x)", -100., 100.);
TF1 *iga1 =
new TF1(
"inv gam",
"1.-1/(1+0.1*x*0.1*x)", -.5, 1.);
void fillhistosauto2p(
unsigned opt = 1,
unsigned n = 1001)
{
auto href =
new TH1D(
"myhref",
"current", 50, 0., -1.);
href->SetBuffer(bsize);
auto href2 =
new TH1D(
"myhref",
"Auto P2, sequential", 50, 0., -1.);
href2->SetBuffer(bsize);
for (
UInt_t j = 0; j < nh; ++j) {
auto hw =
new TH1D(hname.
Data(),
"Auto P2, merged", nbins, 0., -1.);
hw->SetBuffer(bsize);
switch (opt) {
case 1: xx = rndm.Gaus(3, 1); break;
case 2: xx = rndm.Rndm() * 100. - 50.; break;
default: xx = rndm.Gaus(0, 1);
}
if (buffering) {
if (xx > xma)
xma = xx;
if (xx < xmi)
xmi = xx;
xw.Fill(xx);
}
hw->Fill(xx);
href->Fill(xx);
href2->Fill(xx);
if (!hw->GetBuffer()) {
}
}
}
return;
if (
gROOT->GetListOfCanvases()->FindObject(
"c3"))
delete gROOT->GetListOfCanvases()->FindObject(
"c3");
href2->StatOverflows();
href->StatOverflows();
std::cout <<
" ent: " << h0->
GetEntries() <<
"\n";
href->Print();
delete hlist;
delete href;
delete href2;
delete h0;
}
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 r
R__EXTERN TStyle * gStyle
virtual void SetOwner(Bool_t enable=kTRUE)
Set whether this collection is the owner (enable==true) of its content.
virtual Double_t GetRandom(TRandom *rng=nullptr, Option_t *opt=nullptr)
Return a random number following this function shape.
1-D histogram with a double per channel (see TH1 documentation)}
static void StatOverflows(Bool_t flag=kTRUE)
if flag=kTRUE, underflows and overflows are used by the Fill functions in the computation of statisti...
@ kAutoBinPTwo
different than 1.
void Print(Option_t *option="") const override
Print some global quantities for this histogram.
virtual Double_t GetEntries() const
Return the current number of entries.
virtual Long64_t Merge(TCollection *list)
void Add(TObject *obj) override
TObject * Remove(TObject *obj) override
Remove object from the list.
TObject * First() const override
Return the first object in the list. Returns 0 when list is empty.
virtual TObject * DrawClone(Option_t *option="") const
Draw a clone of this object in the current selected pad with: gROOT->SetSelectedPad(c1).
Random number generator class based on M.
Statistical variable, defined by its mean and variance (RMS).
const char * Data() const
static TString Format(const char *fmt,...)
Static method which formats a string using a printf style format descriptor and return a TString.
void SetOptStat(Int_t stat=1)
The type of information printed in the histogram statistics box can be selected via the parameter mod...
- Date
- November 2017
- Author
- Gerardo Ganis
Definition in file fillhistosauto2p.C.