doc/master/logN_8cxx.html

void logN()

{

   auto h1 = new TH1I("hist", "Random data", 100, -5, 5);

   h1->FillRandom("gaus", 10000);


   auto c1 = new TCanvas("c1", "Logarithmic scales", 1200, 800);


   if (!gROOT->IsBatch() && !c1->IsWeb())

      ::Warning("logN.cxx", "macro will not work without enabling web-based canvas");


   c1->Divide(2, 2);


   c1->GetPad(1)->SetLogy(2);  // configure log2

   c1->GetPad(1)->Add(h1, ""); // draw with default draw option


   c1->GetPad(2)->SetLogy(3);   // configure ln - 3 is special case

   c1->GetPad(2)->Add(h1, "l"); // draw histogram as line


   c1->GetPad(3)->SetLogy(8);   // configure log8

   c1->GetPad(3)->Add(h1, "c"); // draw histogram as curve


   c1->GetPad(4)->SetLogy(25);  // configure log25

   c1->GetPad(4)->Add(h1, "E"); // draw histogram as errors

}

TRangeDynCast
ROOT::Detail::TRangeCast< T, true > TRangeDynCast
TRangeDynCast is an adapter class that allows the typed iteration through a TCollection.
Definition TCollection.h:359

Warning
void Warning(const char *location, const char *msgfmt,...)
Use this function in warning situations.
Definition TError.cxx:252

gROOT
#define gROOT
Definition TROOT.h:411

TCanvas
The Canvas class.
Definition TCanvas.h:23

TH1I
1-D histogram with an int per channel (see TH1 documentation)
Definition TH1.h:796

TH1::FillRandom
virtual void FillRandom(TF1 *f1, Int_t ntimes=5000, TRandom *rng=nullptr)
Definition TH1.cxx:3510

c1
return c1
Definition legend1.C:41

h1
TH1F * h1
Definition legend1.C:5