Hi George,
You can superimpose the result of a fit on a 2-d histogram.
Using the fitted function TF2 *f2, do f2->Draw("same,cont1")
Rene Brun
On Thu, 30 Nov 2000, George A. Heintzelman wrote:
>
> Hi rooters,
>
> I'm working with some fits of 2-dimensional histograms with TF2's. But,
> since people have a hard time seeing fits of 2-d histograms, I'd like
> to present these in 1-D slices.
>
> I'm finding that, while it's easy to get the slices, it is hard to get
> the 1-D function representing the fit values at the midpoint of the bin.
>
> In other words, what I would like is a way, given a TF2, to create
> something that looks like a TF1 from it, binding one or the other
> coordinates of the TF2 to a specific value. I'm not sure exactly how
> this would look, but something like:
>
> TF1 * newf = TF2.BindX(33);
> TF1 * newg = TF2.BindY(13.2);
>
> would work.
>
> I don't think there's anything like this now, but if there is, please
> let me know how to do it. ;) If not, I think it would be an extremely
> valuable addition to ROOT.
>
> George Heintzelman
> gah@bnl.gov
>
>
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