Hi Rene,
thanks for you support.
I replaced the string by "" and by "1", both yield the same result:
root [3] plottest()
Warning in <TH1::Build>: Replacing existing histogram: q21
TH1.Print Name= q21, Total sum= 37391
fSumw[0]=26189
fSumw[1]=16000
fSumw[2]=13505
fSumw[3]=7886
fSumw[4]=179
Warning in <TH1::Build>: Replacing existing histogram: q22
TH1.Print Name= q22, Total sum= 52857
fSumw[0]=36714
fSumw[1]=22431
fSumw[2]=19109
fSumw[3]=11317
fSumw[4]=267
Warning in <TH1::Build>: Replacing existing histogram: q22a
TH1.Print Name= q22a, Total sum= 23941
fSumw[0]=15510
fSumw[1]=10190
fSumw[2]=8481
fSumw[3]=5270
fSumw[4]=120
Warning in <TH1::Build>: Replacing existing histogram: q22b
TH1.Print Name= q22b, Total sum= 23770
fSumw[0]=15638
fSumw[1]=10025
fSumw[2]=8719
fSumw[3]=5026
fSumw[4]=140
Warning in <TH1::Build>: Replacing existing histogram: q22c
TH1.Print Name= q22c, Total sum= 35710
fSumw[0]=23493
fSumw[1]=15129
fSumw[2]=12752
fSumw[3]=7829
fSumw[4]=152
Warning in <TH1::Build>: Replacing existing histogram: q23
TH1.Print Name= q23, Total sum= 71099
fSumw[0]=47317
fSumw[1]=29811
fSumw[2]=26009
fSumw[3]=15279
fSumw[4]=358
Warning in <TH1::Build>: Replacing existing histogram: q2a
TH1.Print Name= q2a, Total sum= 91452
fSumw[0]=318947
fSumw[1]=38991
fSumw[2]=33258
fSumw[3]=19203
fSumw[4]=446
This is completely nuts ... up to now i got a result, which only contained
the information of the first two files ... now this is only true for the
bins [3] and [4], for the bins [1] and [2] and the total sum the number is
a bit larger and for bin [0] ... no comment
I checked the numbers of the first three files with paw ... they agree to the
ROOT output.
Maybe one small remark ... due to a bug in my program, LRECL is 256 (as
PAW told me ....). I hope that this is not the problem for ROOT.
Hope that helps in understanding the problem.
> Hi Thomas,
> Your result below indicates that the weight you use in your selection
> contains negative values. Could you run the same test with no
> selections.
> Let me know.
>
> Rene Brun
>
> Thomas Hadig wrote:
> >
> > Dear ROOTers,
> >
> > i have a problem with TChain:
> > I created several PAW NTupels, converted them to ROOT TFiles and made a
> > plot after chaining the file. Obviously, not all events are put in the
> > file.
> >
> > I am using ROOT * Version 2.22/10 28 July 1999 *
> > and tested it on SUN and SGI (IRIX 6.2) here at DESY.
> >
> > Below the macro is given. It first plots the quantity for each file
> > seperatly and in the end gives the chained version of all files, which
> > should be the sum of all values before.
Ciao
Thomas
----------------------------------------------------------------------------
Thomas Hadig, Ottensen, Donnerstr. 20, D-22763 Hamburg (+49 40 39901186)
office : I. Phys. Institut AAC, Room 1c354, Notkestr. 85, D-22607 Hamburg
hadig@rwth-aachen.de Tel. +49 40 8998 2312
http://www-h1.desy.de/~hadig/ FAX +49 40 8998 4385
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