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ROOT Commands

# to see the code can use to put in a script to obtain the same result:
Save / canvas.C entry of the File menu.

# SHELL commands within ROOT
.! ls

# make a copy of an histogram
TH1F *hnew = (TH1F*) h->Clone();
hnew->SetName("hnew"); // rename the new histogram

# normalize histogram
Double_t scale = norm/h->Integral();
h->Scale(scale);

# create a ROOT file and store a histogram on it.
TFile f("histos.root", "new");
h1->Write();

# read a histogram
TFile f("histos.root");
TH1F *h = (TH1F*) f.Get("hname");

# I/O redirection
l.Print() ; > test.log

# convert a single text file to HTML.
THtml h
h.Convert ("MyCode.C", "Look at my code", "htmlout/");

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