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Re: Number of entries in TTree [message #12296 is a reply to message #12208]

Tue, 19 July 2011 13:19

StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino

first-grade participant

From: *to.infn.it

Hi,
another problem of the additional events appears when merging more than one file.

Let us assume that we have 2 mc files of 1000 events; after recosntrution we will have 2 pid files of 1001 events, the last is the dummy one.

When I want to add these 2 files, I will have 2000 mc files and 2002 pid files, but in this case the mc event #1001 will correspond to pid event #1002, breaking the friend mechanism.
This is quite nasty.

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[Message index]

		Number of entries in TTree By: Dima Melnychuk on Tue, 05 July 2011 13:19
		Re: Number of entries in TTree By: StefanoSpataro on Tue, 05 July 2011 13:32
		Re: Number of entries in TTree By: Tobias Stockmanns on Tue, 05 July 2011 13:44
		Re: Number of entries in TTree By: StefanoSpataro on Tue, 05 July 2011 13:53
		Re: Number of entries in TTree By: Tobias Stockmanns on Tue, 05 July 2011 14:27
		Re: Number of entries in TTree By: Bernhard Ketzer on Tue, 05 July 2011 14:56
		Re: Number of entries in TTree By: Tobias Stockmanns on Tue, 05 July 2011 15:19
		Re: Number of entries in TTree By: StefanoSpataro on Tue, 19 July 2011 13:19

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