[ROOT] event redundant info

From: Mathieu Ribordy (mathieu.ribordy@desy.de)
Date: Mon Mar 25 2002 - 12:17:33 MET


Hi,

I have events that I store in a TTree.

Now multiple events in the tree points to the same calibration/geometry
object and to the same history (events undergo multiple
reconstruction,...) and to the same run header.

Then, I do not want to repeat those informations in each event, but I
want to refer to them. How may I do such things (e.g. I'm not sure a can
refer to a specific element of an other tree or use global TRef) ?

Thanks for any help,

    Mathieu Ribordy



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