Hi Rooters,
The problem is the following:
I am creating a TTree with many branches, most of them added by hand
using TBranch::GetListOfBranches()->Add(...), once the tree is created i
fill it with some data.
Then i've used TTree::Print() for debugging; in the output of the
tree and i get some branches with "Total size=0" and "Baskets=0", so i
thought the data were not stored. However if i do a histogram (with
TTree::Draw()) the data are there and they seem to be right (i get the
expected histogram...)
Am i missunderstunding the info given by TTree::Print()?, if not,
What do you think the problem can be?
This is part of the output of TTree::Print().-
*Branch :mdc.r.S1.LA1 :
mdc.r.S1.LA1 *
*Entries : 10 : BranchObject (see
below) *
*..................................................................................*
*Branch :mdc.r.S1.LA1.fName.*fData :
fData *
*Entries : 10 : Total Size = 1100 bytes File Size =
1130 *
*Baskets : 10 : Basket Size = 100 bytes Compression=
0.97 *
*............................................................................*
*Branch :mdc.r.S1.LA1.fTitle.*fData :
fData *
*Entries : 10 : Total Size = 1030 bytes File Size =
1110 *
*Baskets : 10 : Basket Size = 100 bytes Compression=
0.93 *
*............................................................................*
*Branch :mdc.r.S1.LA1.fUniqueID :
fUniqueID *
*Entries : 10 : Total Size = 196 bytes File Size =
184 *
*Baskets : 2 : Basket Size = 100 bytes Compression=
1.07 *
*............................................................................*
*Branch :mdc.r.S1.LA1.fBits :
fBits *
*Entries : 10 : Total Size = 98 bytes File Size
= 91 *
*Baskets : 1 : Basket Size = 100 bytes Compression=
1.08 *
*............................................................................*
*Branch :mdc.r.S1.LA1.HMdcRaw_ :
mdc.r.S1.LA1.HMdcRaw_/I *
*Entries : 10 : Total Size = 0 bytes File Size
= 0 *
*Baskets : 0 : Basket Size = 4000 bytes Compression=
1.00 *
*************************************************************************
*Branch :mdc.r.S1.LA1.HMdcRaw.fTime1 :
fTime1[mdc.r.S1.LA1.HMdcRaw_]/F *
*Entries : 10 : Total Size = 0 bytes File Size
= 0 *
*Baskets : 0 : Basket Size = 4000 bytes Compression=
1.00 *
*************************************************************************
*Branch :mdc.r.S1.LA1.HMdcRaw.fTime2 :
fTime2[mdc.r.S1.LA1.HMdcRaw_]/F *
*Entries : 10 : Total Size = 0 bytes File Size
= 0 *
*Baskets : 0 : Basket Size = 4000 bytes Compression=
1.00 *
*............................................................................*
*Branch :mdc.r.S1.LA1.HMdcRaw.fUniqueID :
fUniqueID[mdc.r.S1.LA1.HMdcRaw_]/i*
*Entries : 10 : Total Size = 0 bytes File Size
= 0 *
*Baskets : 0 : Basket Size = 4000 bytes Compression=
1.00 *
*............................................................................*
*Branch :mdc.r.S1.LA1.HMdcRaw.fBits :
fBits[mdc.r.S1.LA1.HMdcRaw_]/i *
*Entries : 10 : Total Size = 0 bytes File Size
= 0 *
*Baskets : 0 : Basket Size = 4000 bytes Compression=
1.00 *
*............................................................................*
And this is what i use to get the histogram:
root [0] TFile ("test.root")
root [1] T->Draw("mdc.r.S1.LA1.HMdcRaw.fTime1")
Thanks in advance, Manuel
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