Re: [ROOT] Superimpose histograms

From: Rene Brun (Rene.Brun@cern.ch)
Date: Tue Sep 14 2004 - 11:41:05 MEST


Not for the time being. Picking through transparent pads is not implemented.

Rene Brun

Thomas Bretz wrote:
> 
> Hi Rene,
> 
> thanks for the easy example... Is there any chance to still have access
> to the both histograms (and axis-scaling) with the mouse context menu?
> 
> Thanks,
> Thomas.
> 
> Rene Brun wrote:
> > Thomas,
> >
> > In attachement, you will find an example of a transparent pad.
> > This example is now in CVS in the tutorials directory.
> >
> > Rene Brun
> >
> > Thomas Bretz wrote:
> >
> >>Hi Rene,
> >>
> >>I don't want to copy the histogramm... Where can I find information
> >>about 'transparent pads'?
> >>
> >>Thomas.
> >>
> >>Rene Brun wrote:
> >>
> >>>Hi Thomas,
> >>>
> >>>Use DrawCopy or transparent pads
> >>>
> >>>Rene Brun
> >>>
> >>>On Mon, 13 Sep 2004, Thomas Bretz wrote:
> >>>
> >>>
> >>>
> >>>>Hi,
> >>>>
> >>>>I had a look at
> >>>>http://root.cern.ch/root/html/examples/twoscales.C.html
> >>>>
> >>>>but this solution has a problem. I'm superimposing two histograms, but
> >>>>therefor I have to change the units of one of the histograms (Scale()).
> >>>>But I still want to use the histogram afterwards.
> >>>>
> >>>>The problem is, that my program looks like this:
> >>>>0) Fill Data into histograms
> >>>>1) Draw histogram1
> >>>>2) Superimpose histogram2
> >>>>3) Do something with the histogram...
> >>>>4) goto 0)
> >>>>
> >>>>But this doen't easily allow changing the scale of the histogram.
> >>>>Another solution would be to draw a copy of the contents of the
> >>>>histogram, but this takes a lot of time which I don't have...
> >>>>
> >>>>Is ther e any other solution?
> >>>>
> >>>>Thomas.
> >>>>
> >>>
> >>>



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