Dear ROOT experts,
If I give in the next code line by line on the command line then I get the desired result, see att., but when I it from its file, as argument to the root executeable, I get an error, see below.
That I find a big inconsistency.
Does anyone know what is going on and more importantly, how can I make this work from a script??
Many thanks in advance,
Ytsen de Boer.
{
TCanvas c;
TH1F h1(“h1”, “h1”, 1, 0, 1);
h1.Fill(.3, .4)
h1.Draw();
TPaveStats* st= (TPaveStats*)gPad->GetPrimitive(“stats”)->Clone();
st->SetName(“new”)
st->SetX1NDC(.6);
st->SetX2NDC(.;
st->SetY1NDC(.9);
st->SetY2NDC(1.);
st->Draw()
TH1F h2(“h2”,“h2”,2, 0, 1);
h2.Fill(.3, .5); h2.Fill(.7, 0.;
h2.SetLineColor(2);
h2.Draw();
st->Draw();
};
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[h1mars03] ~/tmp/H1Validation $ root test.stat.C
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W E L C O M E to R O O T *
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- Version 5.14/00 14 December 2006 *
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[root.cern.ch](http://root.cern.ch) *
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FreeType Engine v2.1.9 used to render TrueType fonts.
Compiled on 15 December 2006 for linux with thread support.
CINT/ROOT C/C++ Interpreter version 5.16.16, November 24, 2006
Type ? for help. Commands must be C++ statements.
Enclose multiple statements between { }.
root [0]
Processing test.stat.C…
Error: illegal pointer to class object GetPrimitive(“stats”) 0x0 3 test.stat.C:8:
*** Interpreter error recovered ***
root [1]