No puedo hacer que tkz-fct produzca el dibujo de la función. Tengo la impresión de que se debe a una actualización reciente que hice con tlmgr.
Gnuplot funciona bien y lo compilo usando --enable-write18.
Aquí hay un mwe (esta es solo la prueba del 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}
Y aquí está el registro que obtengo
(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)
Respuesta1
Sí, tiene usted razón. La nueva versión de tkz-base es incompatible con la versión de tkz-fct.sty. Hubo un pequeño problema al cargar el nuevo archivo en CTAN. Tendrá que esperar un poco antes de poder encontrar el paquete en CTAN. Actualmente encontrarás el archivo v1.2aquí
Creo que \tkzActivOffya no es necesario con la última versión de 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}
