Hi Christian,
Thank you, I will update soon (after my holidays)
Best Regards
Holger
Am 23.04.2011 16:12, schrieb Christian Feuersaenger:
> Dear Holger,
>
> I have resolved the problem: it was a (rarely occurring?) rounding bug
> in \pgfmathdivide. I have just committed the bugfix to pgf CVS.
>
> Its very good that this has been found, so thanks again for reporting it.
>
> If you rely on this feature, and you do not have access to a recent pgf
> version (in this case, pgf CVS of April 23, 2011 or newer), I can supply
> a bugfix which can be activated by means of something like
> \usepackage{bugfixpgf}.
> If you have access to a pgf developer version, it suffices to upgrade
> pgf and the plot will look as expected.
>
> Best regards
>
> Christian
>
> Am 19.04.2011 09:40, schrieb Holger Maune:
>> Hi,
>>
>> I tried to plot the formula $(1+2x(1+x+25^2x))/(1+4x(1+x+25^2x))$ within a
>> semilog axis. I get ripples on the y-values. Here the code:
>>
>> \documentclass{minimal}
>> \usepackage{pgfplots}
>> \begin{document}
>> \begin{tikzpicture}
>> \begin{semilogxaxis}[domain=1e-2:1e3, samples=101]
>> \addplot[black] {(1+2*x*(1+x+25^2*x))/(1+4*x*(1+x+25^2*x))};
>> \end{semilogxaxis}
>> \end{tikzpicture}
>> \end{document}
>>
>> pfgplots 1.4.1 from texlive2010
>>
>> Any idea, whats going on here?
>>
>> Thanks
>>
>> Holger
>>
>>
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