Re: fEstimate

From: Rene Brun <Rene.Brun_at_cern.ch>
Date: Mon, 23 Feb 2009 16:11:17 +0100


Nicolas Produit wrote:
>
> Now my question what is this SetEstimate used for. Why is it not
> simply automatically alway set to number of entries in the tree?
fEstimate is mainly used to estimate the size of the arrays returned by GetV1,2, etc. It cannot always be set to the number of entries. Think to what will happen if you have 100 billion entries.

Rene Brun
>
> Thanks
> ---
> Nicolas Produit
> INTEGRAL Science Data Center Phone: +41 22 379 2140
> 16, Chemin d'Ecogia Fax: +41 22 379 2133
> CH-1290 Versoix www:
> http://isdc.unige.ch/~produit
>
>
>
Received on Mon Feb 23 2009 - 16:11:46 CET

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