Hi Paul,
This problem is now fixed in CVS. Thanks to have reported it.
Cheers, Olivier
On Wed, 12 Mar 2003, Olivier Couet wrote:
>
> Hi Paul,
>
> You said:
>
> > The problem is that if you first draw such a histogram, and on the next
> > line draw it again with "P HIST SAME", the markers are not in the center
> > of the bin, but they appear to be above the center of the previous bin.
>
> Seems to me the fact you use the option SAME is not the only problem. The
> combination of the option HIST and L has a very weird effect too.
> I have simplified your example to the following one:
>
> dp () {
>
> TFile* tf = new TFile("histos_bjpsiks_p13_tracking_aa_hidca.root");
> TCanvas* tc = new TCanvas("test","test");
> tc->Divide(1,2);
>
> tc->cd(1);
> gPad->SetLogx();
> gPad->SetLogy();
> dca_rec_pi->Draw("HIST");
>
> tc->cd(2);
> gPad->SetLogx();
> gPad->SetLogy();
> dca_rec_pi->Draw("L HIST");
> }
>
> As you can see, on the second plot a "line plot" is drawn together with
> the normal histogram representation. The line plot is correct but the
> histogram representation is shifted by half a bin on the right ! you can
> see it clearly by comparing with the normal plot above. I am investigating
> the problem.
>
> Cheers, Olivier
>
>
--
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