# tkz-fct produces no plots, why?

tkz-fct produces no plots, for instance I copied the following code from the manual:

    \documentclass{article}

\usepackage{color}
\usepackage{tikz}%
\usepackage{tkz-euclide}
\usepackage{tkz-fct} \usetkzobj{all}

\begin{document}
\begin{tikzpicture}[scale=.5]
\tkzInit[xmax=100,xstep=10,
ymax=1000000, ystep=100000]
\tkzAxeX[right] \tkzAxeY[above]
\tkzGrid \tkzFct[color=red,
domain=0:100]{\x**3}
\end{tikzpicture}
\end{document}


This results in the following picture:

gnuplot --version gives:

gnuplot 4.4 patchlevel 2

Any ideas how to solve the problem?

• To complete my answer, you can search gnuplot in you system to verify if gnuplot works correctly. Then you need to use pgf 2.1 with tkz-base, fct etc. and the option "--shell-escape" is necessary to allow the execution of Gnuplot. There are several answers about this problem. – Alain Matthes May 21 '11 at 15:44

You need to read your .log file to verify two things:
1. the path for gnuplot. If the path is fine then you must find a line like gnuplot executed or something like that
2. if in your .log file, you have something like
then you need to use the option --shell-escape or write18 in your script for the compilation.
The problem is the same with pgfplots or another package that uses gnuplot.