One error about the "chain "

ROOT
1

Dear all,

I have used chain to do my data analysis. The *.root file is generated all the same way. i’m wondering what the error prompt means like:

Error in <TBranch::GetBasket>: File: /mnt/LDATA/s30/rdata/S30m020.root at byte:823831, branch:t2si2e, entry:-1, badread=-1 Error in <TBranch::GetBasket>: File: /mnt/LDATA/s30/rdata/S30m021.root at byte:829309, branch:t2si2e, entry:-1, badread=-1 ...........

I’ve checked file “S30m021.root” and find that branch t2si2e is no error.

I’ve attached my .C file and i’m looking forward to help.
s30crscal.C (13.7 KB)

2

Could you post your data file in some public area?

Rene

3

My data file is not large. i attach 2 of them here. File 18 is the normal one and file 20 is the one makes the error shows.
S30m020.root (1.02 MB)
S30m018.root (1.01 MB)

4

You have many problems in your script. I fixed some and the script runs.
see also comment at line 27.

Try running it with

root > .x s30crscal.C+
Rene
s30crscal.C (11.8 KB)

5

Hi,Rene,
there is no error when use the single file. but if chained more files, the same errors comes again.

Error in <TBranch::GetBasket>: File: /mnt/LDATA/s30/rdata/S30m020.root at byte:823831, branch:t2si2e, entry:-1, badread=-1 Error in <TBranch::GetBasket>: File: /mnt/LDATA/s30/rdata/S30m021.root at byte:829309, branch:t2si2e, entry:-1, badread=-1 Error in <TBranch::GetBasket>: File: /mnt/LDATA/s30/rdata/S30m022.root at byte:824060, branch:t2si2e, entry:-1, badread=-1 Error in <TBranch::GetBasket>: File: /mnt/LDATA/s30/rdata/S30m026.root at byte:1312400, branch:t2si2e, entry:-1, badread=-1 Error in <TBranch::GetBasket>: File: /mnt/LDATA/s30/rdata/S30m027.root at byte:827436, branch:t2si2e, entry:-1, badread=-1 Error in <TBranch::GetBasket>: File: /mnt/LDATA/s30/rdata/S30m044.root at byte:842567, branch:t2si2e, entry:-1, badread=-1

6

Could you post the SHORTEST but RUNNING script using the MINIMUM number of files
to reproduce your problem. I cannot reproduce the problem with the script that I posted and using the 2 data files that you posted.

Rene