Chirs,
please check jason's note about show_protons.C
I believe the right sintax is
root -l show_protons.C -c prot 2450
without brackets, as in -c prot[][]
-- t
________________________________________________________________________________
Tancredi Botto, phone: +1-617-253-9204 mobile: +1-978-490-4124
research scientist MIT/Bates, 21 Manning Av Middleton MA, 01949
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
On Sat, 2 Nov 2002, Chris & Kim Crawford wrote:
> hi all,
> here is an quick way to chain the 'ntp' ntuples together
> using the init.C script:
>
> bash> root -l ntp.C 1479 1480
> root[0] chain[0]->Draw("whatever")
> root[1] Draw16("ttl#t:ttl#b") //draw's 16 histograms automatically
> root[2] CutG() // after hitting enter, click on the bounds of your
> // graphical cut; double click on last point
> root[3] Draw("ttl2t:ttl3b") //it will now draw all points in black
> // and superimpose points passing the cut in red
> // (root still has problems w/ TCutG & TChain together
> // so this may not work until we upgrade root)
>
> for the 'eep' ntuple, use init.C instead of ntp.C.
>
> chaining is done internally using the 'TChain' class, which
> works as an ntuple across multiple files.
> TChain ntp("ntp")
> ntp->Add("new_datafile")
>
> --hope this helps, chris
>
>
>
> Tancredi Botto wrote:
> >
> > Sometimes you just need to string ntuples together.
> > Read on
> >
> > -- t
> > ________________________________________________________________________________
> > Tancredi Botto, phone: +1-617-253-9204 mobile: +1-978-490-4124
> > research scientist MIT/Bates, 21 Manning Av Middleton MA, 01949
> > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> >
> > ---------- Forwarded message ----------
> > Date: Thu, 31 Oct 2002 23:24:04 -0500
> > From: vitaliy ziskin <vziskin@yahoo.com>
> > To: Tancredi Botto <tancredi@lns.mit.edu>
> > Subject: commands for adding ntuples
> >
> > TFile run1("filename1")
> > TFile run1("filename2")
> > TFile run1("filename3")
> > TFile run1("filename4")
> >
> > TNtuple *ntp1
> > TNtuple *ntp2
> > TNtuple *ntp3
> > TNtuple *ntp4
> >
> > ntp1 = (TNtuple*)run1.Get("eep")
> > ntp2 = (TNtuple*)run2.Get("eep")
> > ntp3 = (TNtuple*)run3.Get("eep")
> > ntp4 = (TNtuple*)run4.Get("eep")
> >
> > ntp1->Draw("ncr>>htemp")
> > ntp2->Draw("ncr>>+htemp")
> > ntp13->Draw("ncr>>+htemp")
> > ntp4->Draw("ncr>>+htemp")
> >
> > htemp->Draw()
> >
> > // you don't need to declaire htemp
>
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