> Hi, Rene,
> Thank you very much! It works this way. But I have another question:
> Where to put the cut condition like abs(x)<0.2? I tried this:
> tree.Draw("y:x","prob","surf1","abs(x)<0.2");
> tree.Draw("y:x","prob","abs(x)<0.2","surf1");
> Both do not work.
I think
tree.Draw("y:x","prob*(abs(x)<0.2)","surf1");
will do job.
Try,
Valeri
> Thank you very much!
>
> Kai Yi
>
> On Sat, 27 Jan 2001, Rene Brun wrote:
>
> > Hi Kai,
> > I am not sure to understand your question.
> > Do you want to create a 2-d histogram of x versus y
> > filling eacg cell with the Prob values ? If yes, do
> > tree.Draw("y:x","prob","surf1");
> >
> > Rene Brun
> >
> > On Fri, 26 Jan 2001, Kai Yi wrote:
> >
> > > Hi, Everyone,
> > > I have a specific question to ask, anyone can help me?
> > > Suppose I have a ntuple(tree), it has the following leaves:
> > > nEvent file://trigger number
> > > x file://x coordinate
> > > y file://y coordinate
> > > z file://z coordinate
> > > prob file://some Prob. based on x,y,z
> > >
> > > I want to draw a surface picure like this: x->y->Prob
> > > here I need to specify the trigger no.--nEvent, about z direction, it is a
> > > integrate.
> > > I tried this from treeViewer, it draw me a 3D picture, it is point based
> > > picture, I want a surface picture(more smoothly). I tried to put "Surf"
> > > into Gopt box, it does not work.
> > > Anyone can help me?
> > > Thanks a lot
> > >
> > >
> > > Kai YI
> > >
> > >
> > >
> > >
> >
>
>
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