Hi Martin,
Use the "goff" option of TTree::Draw and use the return value, eg
int nselected = tree.Draw("x","y<0","goff");
Rene Brun
On Thu, 28 Mar 2002, Martin Turner wrote:
>
> I have a ready made tree and I want to make a selction on numerous leaves
> that returns a yes or no answer on wether it has passed all the
> cuts. Currently the only way I know how to do this is to make the
> histogram using TTree::Project and then call GetSelectedRows(), but I was
> wondering if there is a neater way to do it without making many
> histograms that I never want to look at.
>
> Martin
>
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