Re: [ROOT] Supermpose Histos with offset

From: Alessio Sarti (asarti@SLAC.stanford.edu)
Date: Wed Jul 09 2003 - 13:54:41 MEST


Thanks very very very very much!!! :)
works nicely.
ale

______________________________________________________
Alessio Sarti     Universita' & I.N.F.N. Ferrara

>>>I'm in Ferrara<<<

 tel  +39-0532-974328  Ferrara
roma  +39-06-49914338
SLAC +001-650-926-2972

"... e a un Dio 'fatti il culo' non credere mai..."
(F. De Andre')

"He was turning over in his mind an intresting new concept in
Thau-dimensional physics which unified time, space, magnetism, gravity
and, for some reason, broccoli".  (T. Pratchett: "Pyramids")

On Wed, 9 Jul 2003, Rene Brun wrote:

> Hi Alessio,
>  see example below
>
> Rene Brun
>
>
> void shift() {
>    TH1F *h1 = new TH1F("h1","test",40,-2,2);
>    h1->FillRandom("gaus",1000);
>    TH1F *h2 = (TH1F*)h1->Clone("h2");
>    TF1 *f1 = new TF1("f1","1+0.1*x",-2,2);
>    h2->Multiply(f1,1);
>    h1->SetMarkerStyle(20);
>    h1->SetMarkerColor(kBlue);
>    Double_t shift = 0.5*h1->GetBinWidth(1);
>    h2->GetXaxis()->SetLimits(-2+shift,2+shift);
>    h2->SetMarkerStyle(21);
>    h2->SetMarkerColor(kRed);
>    h1->Draw("e1");
>    h2->Draw("e1 same");
> }
>
>
> Alessio Sarti wrote:
> >
> > Hi all,
> > I'd like to superimpose two histograms that have the same range with
> > markers a little bit displaced.
> > To clarify:
> > root puts by default a marker at a center of the bin. I want to draw an
> > histogram with a marker that is not placed at the center but a little bit
> > displaced (right or left is not a problem). In this way I avoid error bars
> > of my superimposed histos to overlap/merge and the plots is more readable.
> >
> > There's a given function/macro that can do that?
> > Thanks very very much.
> > Alessio
> >
> > ______________________________________________________
> > Alessio Sarti     Universita' & I.N.F.N. Ferrara
> >
> > >>>I'm in Ferrara<<<
> >
> >  tel  +39-0532-974328  Ferrara
> > roma  +39-06-49914338
> > SLAC +001-650-926-2972
> >
> > "... e a un Dio 'fatti il culo' non credere mai..."
> > (F. De Andre')
> >
> > "He was turning over in his mind an intresting new concept in
> > Thau-dimensional physics which unified time, space, magnetism, gravity
> > and, for some reason, broccoli".  (T. Pratchett: "Pyramids")
>



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