On Tue, 26 Dec 2000, Rene Brun wrote:
> Ilia,
> The help of TTree::Draw says:
> // Saving the result of Draw to an histogram
> // =========================================
> // By default the temporary histogram created is called htemp.
> // If varexp0 contains >>hnew (following the variable(s) name(s),
> // the new histogram created is called hnew and it is kept in the current
> // directory.
> // Example:
> // tree.Draw("sqrt(x)>>hsqrt","y>0")
> // will draw sqrt(x) and save the histogram as "hsqrt" in the current
> // directory.
> //
> // By default, the specified histogram is reset.
> // To continue to append data to an existing histogram, use "+" in front
> // of the histogram name;
> // tree.Draw("sqrt(x)>>+hsqrt","y>0")
> // will not reset hsqrt, but will continue filling.
> //
>
> Rene Brun
Thanks a lot Brun and all the best in the New Year (and the best version
ROOT).
Best regards,
Ilia
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* Ilia Ravinovich *
* Department of Particle Physics PPE Division *
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