doc/master/saveall_8C.html

void saveall()

{

   gROOT->SetBatch(kTRUE); // enforce batch mode to avoid appearance of multiple canvas windows


   std::vector<TPad *> pads;


   for(int n = 0; n < 100; ++n) {

      auto c = new TCanvas(TString::Format("canvas%d", n), "Canvas with histogram");


      auto h1 = new TH1I(TString::Format("hist%d", n), "Histogram with random data", 100, -5., 5);

      h1->SetDirectory(nullptr);

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


      h1->Draw();


      pads.push_back(c);

   }


   TCanvas::SaveAll(pads, "image%03d.png"); // create 100 PNG images


   TCanvas::SaveAll(pads, "image.svg"); // create 100 SVG images, %d pattern will be automatically append


   TCanvas::SaveAll(pads, "images.root"); // create single ROOT file with all canvases


   TCanvas::SaveAll(); // save all existing canvases in allcanvases.pdf file

}

c
#define c(i)
Definition RSha256.hxx:101

kTRUE
constexpr Bool_t kTRUE
Definition RtypesCore.h:100

gROOT
#define gROOT
Definition TROOT.h:407

TCanvas
The Canvas class.
Definition TCanvas.h:23

TCanvas::SaveAll
static Bool_t SaveAll(const std::vector< TPad * > &={}, const char *filename="", Option_t *option="")
Save provided pads/canvases into the image file(s) Filename can include printf argument for image num...
Definition TCanvas.cxx:2642

TH1I
1-D histogram with an int per channel (see TH1 documentation)
Definition TH1.h:540

TH1::SetDirectory
virtual void SetDirectory(TDirectory *dir)
By default, when a histogram is created, it is added to the list of histogram objects in the current ...
Definition TH1.cxx:8928

TH1::FillRandom
virtual void FillRandom(const char *fname, Int_t ntimes=5000, TRandom *rng=nullptr)
Fill histogram following distribution in function fname.
Definition TH1.cxx:3519

TH1::Draw
void Draw(Option_t *option="") override
Draw this histogram with options.
Definition TH1.cxx:3066

TString::Format
static TString Format(const char *fmt,...)
Static method which formats a string using a printf style format descriptor and return a TString.
Definition TString.cxx:2378

n
const Int_t n
Definition legend1.C:16

h1
TH1F * h1
Definition legend1.C:5