Entry range in TNtupleD

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1

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ROOT Version: V7
Platform: Ubuntu 18.04
_Compiler:gcc & g++

How to print the entry range (first entry, last entry) for each of the clusters of the processed TNTuple data set?

2

Hi,
if with clusters you mean the TTree clusters, there is a handy tree->Print("clusters") function, or you can use auto it = tree->GetClusterIterator(0) and iterate over the TClusterIterator.

Cheers,
Enrico

3

But through Tcluster it will print only next and start entry. What about first and last entry?

4

I am not sure I understand the question, but you can call Next() on the TClusterIterator until you have iterated on all clusters.

1 Like
5

Ok @eguiraud Thank you!