Não consigo fazer o tkz-fct produzir o desenho da função. Tenho a impressão de que é causado por uma atualização recente que fiz com o tlmgr.
O Gnuplot está funcionando bem e eu compilo usando --enable-write18.
Aqui está um mwe (este é apenas o teste do documento tkz-fct).
\documentclass{scrartcl}
\usepackage[usenames,dvipsnames]{xcolor}
\usepackage{tkz-fct}
\begin{document}
\begin{tikzpicture}[scale=1.25]
\tkzActivOff
\tkzInit[xmin=-5,xmax=5,ymax=2]
\tkzGrid
\tkzAxeXY
\tkzFct[color=red]{2*x**2/(x**2+1)}
\tkzActivOn
\end{tikzpicture}
\end{document}
E aqui está o log que recebo
(c:/texlive/2019/texmf-dist/tex/latex/jknapltx/ursfs.fd
File: ursfs.fd 1998/03/24 rsfs font definition file (jk)
) ( FP-EVAL ( FP-UPN
! Undefined control sequence.
<argument> \@xa
l.11 \tkzFct[color=red]{2*x**2/(x**2+1)}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.
! I don't know how to \FP@upn[].
\erroraction ... don't know how to \string #1[#2]}
l.11 \tkzFct[color=red]{2*x**2/(x**2+1)}
This error message was generated by an \errmessage
command, so I can't give any explicit help.
Pretend that you're Hercule Poirot: Examine all clues,
and deduce the truth by order and method.
! FP error: UPN stack is empty!.
\FP@errmessage #1->\errmessage {FP error: #1!}
l.11 \tkzFct[color=red]{2*x**2/(x**2+1)}
(That was another \errmessage.)
) ) ( FP-EVAL ( FP-UPN
! Undefined control sequence.
<argument> \@xb
l.11 \tkzFct[color=red]{2*x**2/(x**2+1)}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.
! I don't know how to \FP@upn[].
\erroraction ... don't know how to \string #1[#2]}
l.11 \tkzFct[color=red]{2*x**2/(x**2+1)}
(That was another \errmessage.)
! FP error: UPN stack is empty!.
\FP@errmessage #1->\errmessage {FP error: #1!}
l.11 \tkzFct[color=red]{2*x**2/(x**2+1)}
(That was another \errmessage.)
) ) ( FP-DIV ) ( FP-DIV ) [1
{c:/texlive/2019/texmf-var/fonts/map/pdftex/updmap/pdftex.map}] (./test.aux) )
Here is how much of TeX's memory you used:
28903 strings out of 492162
603961 string characters out of 6129063
752124 words of memory out of 5000000
32871 multiletter control sequences out of 15000+600000
535571 words of font info for 36 fonts, out of 8000000 for 9000
1141 hyphenation exceptions out of 8191
82i,7n,99p,10139b,861s stack positions out of 5000i,500n,10000p,200000b,80000s
<
c:/texlive/2019/texmf-dist/fonts/type1/public/amsfonts/cm/cmmi10.pfb><c:/texliv
e/2019/texmf-dist/fonts/type1/public/amsfonts/cm/cmr10.pfb><c:/texlive/2019/tex
mf-dist/fonts/type1/public/amsfonts/cm/cmsy10.pfb>
Output written on test.pdf (1 page, 25654 bytes).
PDF statistics:
23 PDF objects out of 1000 (max. 8388607)
16 compressed objects within 1 object stream
0 named destinations out of 1000 (max. 500000)
13 words of extra memory for PDF output out of 10000 (max. 10000000)
Responder1
sim você está certo. A nova versão do tkz-base é incompatível com a versão do tkz-fct.sty. Ocorreu um pequeno problema ao carregar o novo arquivo no CTAN. Você terá que esperar um pouco antes de encontrar o pacote no CTAN. Atualmente você encontrará o arquivo v1.2aqui
Acho que \tkzActivOffnão é mais necessário com a versão mais recente do TikZ.
\documentclass{standalone}
\usepackage[usenames,dvipsnames]{xcolor}
\usepackage{tkz-fct}
\begin{document}
\begin{tikzpicture}[scale=1.25]
%\tkzActivOff
\tkzInit[xmin=-5,xmax=5,ymax=2]
\tkzGrid
\tkzAxeXY
\tkzFct[color=red]{2*x**2/(x**2+1)}
%\tkzActivOn
\end{tikzpicture}
\end{document}
