Coping with TTrees...

From: Andrew Askew (padley) (askew@physics.rice.edu)
Date: Thu Jul 29 1999 - 20:24:47 MEST


Hello Root-meisters!

I need to find a way to get data (actual NUMBERS) out of a TTree and into
an ASCII file so that I can run an analysis program over it.  As strange
as it may sound, I am unable to intuit a way to get this sort of thing OUT
of a TTree.  Getting data from an ASCII file INTO a TTree is a well known
solution.  The only references I've seen have been to a rather arcane
array of calls to TBranches (ad nausea) and use of the Event class.  As I
have a much different list of variables here, so I simply (in a manner of
speaking) need to write my own event class, with its own Track variables
to handle this?

Andrew Askew



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