Re: 3d problems

Rene Brun (Rene.Brun@cern.ch)
Thu, 18 Mar 1999 22:43:52 +0000

Raimond Snellings wrote:
>
> Hi rooters,
>
> When I try to plot x vs y vs z in root
> (in my case it comes from a star table
> St_TableNtuple adcxyz(*pytfc);
> adcxyz.Fill(*pytfc);
> but I don't think this matters)
> adcxyz.Draw("x:y:z") works and I can rotate it with the
> mouse. However there are no axis labels and no axis at all.
> Is there a way to turn this on.
> Also when I do:

Hi Raimond,
Currently the axis are not drawn for 3-d scatter-plots.

>
> TH2S *dhist1 = new TH2S("dhist1","x vs y vs z",100,-150,0,100,-50,0)
> root [55] adcxyz.Draw("x:y>>dhist1")
> root [56] dhist1->Draw()
> root [57] dhist1->GetEntries()
> (Stat_t)9.890000000000e+02
>
> this works however
>
> root [64] TH3S *dhist4 = new TH3S("dhist4","x vs y vs
> z",100,-150,0,100,-50,0,100,0,200)
> root [65] adcxyz.Draw("x:y:z>>dhist4")
> root [66] dhist4->Draw()
> root [67] dhist4->GetEntries()
> (Stat_t)0.000000000000e+00
>
> seems not work at all.
>
> The root version I am using is 2.21/06

This is another limitation with the 3-d projections.
I did not implement yet the logic like for 1-d, 2-d to save
the result in a 3-d histogram.

Rene Brun