Hi Reinhardt,
When a 2-d histogram is drawn, a number of markers proportional
to the cell content is drawn at random in the cell area.
Why do you use a 2-d histogram if your problem is simply
to draw a graph of points y(i) vs x(i). Use a TGraph instead
or a TH1
Rene Brun
Reinhardt Chamonal wrote:
>
> ok It's trivial, I declare the histogram as the following:
> hpx = new TH2F("rowinfo","Row population",100,0,9,100,0,1.5);
> Then I do a loop over rownb and fill it as the following:
> hpx->Fill(rownb,1);
> so for each rownb I have a 1. When I plot it, the points are not on the
> same line, there are small variations...
> I joined a picture, you'll know what I mean.
> Cheers
>
> > Hi,
> >
> > Please be more specific and give an example.
> >
> > Rene Brun
> >
> > Reinhardt Chamonal wrote:
> > >
> > > Hi,
> > > It's me again, but this time I have a problem of alignment..
> > > I fill a 2D histogram with a bunch of ones and when I plot it the points
> > > are not aligned !?. There are small variations.
> > > Any Idea Why ?
> > > I am using root 3.01/05...
> > >
> > > Cheers
> > >
> > > --
> > > ------------------------------------------------------------
> > > Reinhardt CHAMONAL The University of Edinburgh
> > > Dept. of Physics & Astronomy
> > > email: chamonal@ph.ed.ac.uk King's Buildings, JCMB, 5301
> > > Mayfield Road
> > > phone: +44-131-650 5307 Edinburgh, EH9 3JZ
> > >
> > > web: http://www.ph.ed.ac.uk/~chamonal/
> > > http://www.reuh.fr.st
> > > ------------------------------------------------------------
> >
>
> --
> ------------------------------------------------------------
> Reinhardt CHAMONAL The University of Edinburgh
> Dept. of Physics & Astronomy
> email: chamonal@ph.ed.ac.uk King's Buildings, JCMB, 5301
> Mayfield Road
> phone: +44-131-650 5307 Edinburgh, EH9 3JZ
>
> web: http://www.ph.ed.ac.uk/~chamonal/
> http://www.reuh.fr.st
> ------------------------------------------------------------
>
> --------------------------------------------------------------------------------
>
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> alignement.gif Type: GIF Image (IMAGE/gif)
> Encoding: BASE64
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