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 //trigger number
> x //x coordinate
> y //y coordinate
> z //z coordinate
> prob //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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