Re: [ROOT] TMultipleGraph ?

From: Peter Steinberg (steinber@rcf.rhic.bnl.gov)
Date: Thu Oct 12 2000 - 17:57:37 MEST


Will there be (or is there?!) an version of this for histograms?  

although it's a simple exercise to roll your own, it would be nice to have
an "official root" way to manage groups of drawable objects.  that is,
i like to have just one object to draw when i have N histograms and graphs
that i always overlay.

- Peter

On Thu, 12 Oct 2000, Rene Brun wrote:

> Hi Anton,
> See class TMultiGraph at URL:
> 
> http://root.cern.ch/root/htmldoc/TMultiGraph.html
> 
> Code also available in CVS
> 
> Rene Brun
> 
> 
> KOSU_FOKIN@garbo.lucas.lu.se wrote:
> > 
> > Hi Rene,
> > 
> > I am frequently drawing one, two or more graphs
> > on the same plot using TH2F as an underlying histogram.
> > To fit all the graphs (with some margines) into
> > the histogram I have to use the folowing procedure
> > 
> > - find min/max of all graphs
> > - book or rebin the histogram to fit min max
> > - draw hist
> > - draw graphs
> > 
> > I also need to apply this procedure every time one
> > of the graphs changes to fit it into the histogram.
> > 
> > Could you make this procedure a kind of automatic?
> > Why should a user deal with booking a histogram,
> > finding/setting min and max, number of bins, etc.
> > 
> > A kind of normal way to do it is use somethig like
> > 
> > TMultipleGraph *MultipleGraph = new TMultipleGraph(Graph1);
> > 
> > MultipleGraph->Draw();
> > 
> > MultipleGraph->AddGraph(Graph2);
> > 
> > etc.
> > 
> > Or I am missing something as usual?:))
> > 
> > Regards,
> > Anton
> 



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