Hi,
You can do the following:
ntp->Draw("(nneu>0)*neuecal[0]+(nneu>1)*neuecal[1]+(nneu>2)*neuecal[2]+(nneu>3)*neuecal[3]>>TotNeutralEnergy");
Rene Brun
On
Thu, 31 Jul 2003, Yiqun Wang wrote:
> I wonder if there is an easy way to project a TF2 to TF1, by fixing either
> x or y? I searched the ROOTtalk site and went through the document, but
> could not find it. Basically, I would like to have something like, for
> example:
>
> TF2 *f2 = new TF2("f2", "x*y/([0]**2+x**2+y**2)",-10,10,-10,10, 1);
> TF1 *f1 = f2->ProjectionX("_px", -1); // i.e. y=-1.0
>
> Is it easy to implement something like that?
>
> Yiqun Wang
>
>
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