Hi Nick,
Yes, this could be implemented in TTreeViewer or the standard browser.
In the long todo list.
Rene Brun
On Wed, 12 Jun 2002, Nick van Eijndhoven wrote:
> Hi Rene,
> Thanks for your quick reply; indeed the Query works as expected.
> As mentioned somewhat earlier, it would be nice to have from
> the TTreeViewer the facility of loading a single entry based
> on some specified conditions (e.g. a LoadEntry button on the
> panel, which obeys the selection criteria). The selection
> criateria could then by something like ientry==3 but also
> EVT==101 like in the example I gave below.
>
> Cheers,
> Nick.
>
> --
> Dr. Nick van Eijndhoven mailto:nick@phys.uu.nl http://www.phys.uu.nl/~nick
> --------------------------------------------------------------------------
> Org.: Utrecht University/Nikhef, Department of Subatomic Physics
> Address: Princetonplein 5, NL-3584 CC Utrecht, The Netherlands
> Phone: +31-30-2532331(direct) +31-30-2531492(secr.) Fax: +31-30-2518689
> NIKHEF: +31-20-5922178(direct) +31-20-5922000(secr.) Fax: +31-20-5925155
> CERN: +41-22-7679751(direct) +41-22-7675857(secr.) Fax: +41-22-7679480
> Offices: Buys Ballot lab. 710 (Utrecht) N241 (Nikhef) B23 1-020 (CERN)
> --------------------------------------------------------------------------
>
>
> Rene Brun wrote:
> >
> > Hi Nick,
> >
> > You can try:
> >
> > tree.Query("BRHIST.Draw()"," EVT==101");
> >
> > or tree.Scan instead of Query
> >
> > Rene Brun
> >
> > On Tue, 11 Jun 2002, Nick van Eijndhoven wrote:
> >
> > > Dear friends,
> > > In performing some data analysis I want to create an output tree
> > > of which a certain branch BRHIST contains a histogram.
> > > The tree contains of course several entries of which each entry has
> > > a certain event number stored as EVT.
> > > In my analysis I would like to display for a certain event (let's say
> > > EVT==101) the corresponding histogram from the branch BRHIST.
> > > How should I achieve this ?
> > > Obviously I would like to use the TTreeViewer facility of the tree
> > > for it, since on basis of how the histo looks like I would also like
> > > to investigate several other variables of that event.
> > >
> > > Cheers,
> > > Nick.
> > > --
> > > Dr. Nick van Eijndhoven mailto:nick@phys.uu.nl http://www.phys.uu.nl/~nick
> > > --------------------------------------------------------------------------
> > > Org.: Utrecht University/Nikhef, Department of Subatomic Physics
> > > Address: Princetonplein 5, NL-3584 CC Utrecht, The Netherlands
> > > Phone: +31-30-2532331(direct) +31-30-2531492(secr.) Fax: +31-30-2518689
> > > NIKHEF: +31-20-5922178(direct) +31-20-5922000(secr.) Fax: +31-20-5925155
> > > CERN: +41-22-7679751(direct) +41-22-7675857(secr.) Fax: +41-22-7679480
> > > Offices: Buys Ballot lab. 710 (Utrecht) N241 (Nikhef) B23 1-020 (CERN)
> > > --------------------------------------------------------------------------
> > >
>
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