Muhammad,
You did not understand Rene's answer .
Imagine you have a 2d- histogram . Now you create 2 1d histograms by making projections on the x and y axes . There is no way to retrieve the original 2d histogram from these 2 projection s!
ERddy
>
> Hi Rene
>
> Well I have the original info in a tree where i applied slightly
> different
> cuts.
>
> Because I did not find any thing where I can plot the two variables
> as a
> 2D histo with slightly different cuts.
>
> Is there any thing or you are suggesting that I should create a tree
> from
> these h1 and h2 which i created from a tree with 2 slightly different
> set
> of cuts.
>
> cheers
>
> -S-
>
> On Fri, 17 Jun 2005, Rene Brun wrote:
> >This would be like creation of energy from vacuum.
>
> >You must have the original values to be able to see the
> correlations.
> >Start from a TTree.
>
> >Rene Brun
>
> On Fri, 17 Jun 2005, Muhammad Saleem wrote:
>
> >
> > Hi folks
> >
> > This might be very basic thing in root,but sorry I could not find
> this.
> >
> > I have 2 histgrams filled , h1 and h2
> >
> > I want to plot a 2D histogram from them:
> > like
> >
> > h1:h2
> >
> > This was easy if they are in a tree.
> >
> > Any one have some idea?
> >
> > cheers
> >
> > -S-
> >
>
>
Received on Fri Jun 17 2005 - 15:24:27 MEST
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