RE: [ROOT] Binary operation in selection

From: Philippe Canal (pcanal@fnal.gov)
Date: Wed Apr 30 2003 - 18:29:12 MEST 

Hi Elena,

You forgot to specify which version of ROOT you having a problem with (and
also the interesting things in the stack trace usually only starts after the
6th lines).

Any, I can NOT reproduce your problem.  However, the version of ROOT that
you are likely to be using (v3_05_00) had a bad problem with recovering from
bad input in TTree::Draw (it crash when you do no give it a correct name in
the tree).  So please check that mu1.ttf exist.  If it does, please me where
to find your file and which ROOT version you are using.

Cheers,
Philippe.

-----Original Message-----
From: owner-roottalk@pcroot.cern.ch
[mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Elena Vataga
Sent: Wednesday, April 30, 2003 10:14 AM
To: Rene Brun
Cc: roottalk@pcroot.cern.ch
Subject: [ROOT] Binary operation in selection



Hello rooters!

I need to use selection for my tree
involving binary operators like:

"(mu1.tff>>4)&0x1==1"

but as well as I understand TCut do not accept it:
t->Draw("mu1.tff","(mu1.tff>>4)&0x1==1")

 *** Break *** segmentation violation
 Generating stack trace...
 0x2ac6e97b in TUnixSystem::StackTrace(void) at (null):0 from
/home/users/vataga/ROOT/root/lib/libCore.so
 0x2ac6d4b2 in TUnixSystem::DispatchSignals(ESignals) at (null):0 from
/home/users/vataga/ROOT/root/lib/libCore.so

Is there some simple way to do it?
(I want to avoid MakeClass or MakeSelector if possible)

Thank you in advance,
	Elena


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