On Mon, 23 Jun 2003, Philippe Canal wrote:
> Hi Valeri,
>
> One of the many ways:
> TString x = "tdc1[1]-tdc1[0]/49";
> TString y = "tdc1[3]-tdc1[2]/47";
> tree->Draw(y+"%"+x);
I would prefere smth like:
TTreeViewer v(tree);
v.AddAlias("x1","(tdc1[1]-tdc1[0])/49");
v.AddAlias("y1","(tdc1[3]-tdc1[2])/47");
v.AddAlias("x2","(tdc2[1]-tdc2[0])/49");
v.AddAlias("y2","(tdc2[3]-tdc2[2])/47");
v.Draw("y2-y1:x2-x1");
In viewer there is gui for moreless similar functionality, but it is not alwais
convenient (as in the above case for example) to drag many variables by the
scring.
May be there is already API to this funtions? It is not obvious from the
documentation.
Regards,
Valeri
>
> Cheers,
> Philippe.
>
> -----Original Message-----
> From: owner-roottalk@pcroot.cern.ch
> [mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Valeri Tioukov
> Sent: Monday, June 23, 2003 8:32 AM
> To: roottalk
> Subject: [ROOT] aliases for tree variables
>
>
> Hi Rooters,
>
> What is the simpliest way to get in root the same effect
> as I can do in paw with lines:
>
> alias/cre x tdc1[1]-tdc1[0]/49
> alias/cre y tdc1[3]-tdc1[2]/47
> nt/pl 1.y%x
>
> Regards
> Valeri
>
>
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