Francesco,
Instead of:
Slice->ProjectionY("Slice_i",i,i);
do
Slice->ProjectionY(Form("Slice_%d",i),i,i);
Rene Brun
On Mon, 26 Apr 2004, Perfetto
Francesco wrote:
> Hi All,
>
> I have the following problem:
> I have to do many slice of a bidimensional histogram, and I would like to
> call it "Slice_1", "Slice_2", ..., etc. etc.
>
> I make this in my script:
>
> TFile *f1 = new TFile("MC.root");
> TFile *f2 = new TFile("proiezioni_MC_30x70.root","RECREATE");
> TTree *t = (TTree*)f1->Get("res");
> TH2D *Slice = new TH2D("Slice","Slice",30,0,1,70,-1,2);
>
> ...
>
> for(Int_t i=1;i<31;i++)
> Slice->ProjectionY("Slice_i",i,i);
>
> ...
>
> f2->Write();
>
> But I haven't that I want.
> Infact all Slice are named Slice_i.
> Can anyone help me?
>
> Thanks
> Francesco.
>
> I use RedHat 9.0 with root 4.00/03
>
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