RE: [ROOT] MakeClass and TEventList

From: Philippe Canal (pcanal@fnal.gov)
Date: Wed Oct 24 2001 - 23:43:28 MEST


Hi Heather,

> Is it possible to call TMath::Min from within a TCut

No it is not.  The formula used by TTree::Draw and the same as
the TFormula.  It is only a limited subset of C++ which is
described at http://root.cern.ch/root/html/TFormula.html#TFormula:Analyze.

Cheers,
Philippe.

-----Original Message-----
From: owner-roottalk@pcroot.cern.ch
[mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Heather Kelly
Sent: Wednesday, October 24, 2001 4:17 PM
To: roottalk@pcroot.cern.ch
Subject: [ROOT] MakeClass and TEventList


Hi,

I am using ROOT 3.00.06 on Windows.

2 questions:

In the code generated by TTree::MakeClass, would it be possible to include
code that would use a TEventList if the TTree is setup to use a TEventList?
 It is certainly possible to modify the code to use the eventlist - but it
would be nice if it were done automatically...or am I using the MakeClass
code incorrectly?

Second question:
Is it possible to call TMath::Min from within a TCut passed to a
TTree:Draw?  It does not seem to work for me:

t->Draw("Event_Id", "TMath::Min(entry1, entry2) < 5");

I've tried Min as well..

Thanks,
Heather



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