Hi,
I am still looking for a solution ...
The only thing that works are NDC[0,1] coordinates, I cannot, however,
find any function to translate "histogram coordinates" into them.
Could you, please, help me,
Best regards,
Jacek.
P.S. In the meantime I also checked that gcc-2.95.3 based root does not
work on RH7.3 ... the 4.00.03 behaves like the gcc-3.2.3 based one,
the 3.10.02 dies with sigsegv when trying to create the canvas (or
dividing it into pads, not sure now). Jacek.
On Mon, 12 Apr 2004, Rene Brun wrote:
> Hi Jacek,
>
> You must be using a version older than 3.10.
> Support for log scales for low level primitives like markers and lines
> was introduced in 3.10 only.
>
> Rene Brun
>
> On
> Fri, 9 Apr 2004, Jacek M.
> Holeczek wrote:
>
> > Hi,
> > I've met the following problem.
> > I have a TH2F with user specified bins (both in X and Y) which I draw in a
> > pad :
> > gPad->SetLogx(1);
> > gPad->SetLogy(1);
> > histo->Draw("cont4");
> > What I get is a correctly drawn histogram and the newly created axes are:
> > X from 1.0e-1 to 3.0,
> > Y from 1.0e-5 to 1.0e-3.
> > Now I would like to Draw a TMarker in the "min" of this histogram (let's
> > say x=1.0, y=1.0e-4), so I try :
> > TMarker *m = new TMarker(1.0, 1.0e-4, 29)
> > m->Draw();
> > The problem is ... either the marker is not drawn at all or it appears on
> > a completely crazy position.
> > If I "Inspect" the marker which is displayed, I get some coordinates, but
> > I cannot find any function which translates between these coordinate
> > systems (none of them is NDC[0,1]).
> >
> > Could you, please, help me,
> > Thanks in advance,
> > Best regards,
> > Jacek.
> >
>
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