[TxMt] latex pgfplots cannot find gnuplot tables

[Graham Smith]

I have asked about this in the obvious places (pgf help forum and
comp.text.tex) and after some initial help, the help has dried up. As
this is going to be a specifically Mac users here, maybe the problem
may be more obvious.

When I try and compile this code (from the manual):

\documentclass[a4paper]{article}
\usepackage{pgfplots}
\begin{document}

\begin{tikzpicture}%
\begin{axis}[
		xlabel=$x$,
		ylabel=$\sin(x)$,
		name=an axis,
]
	\addplot plot [id=sin] function{sin(x)};
\end{axis}
\end{tikzpicture}%

\end{document}

I get these errors:


Latex Error: ./PDFPlotTrial2.tex:11 Package pgfplots Error: Sorry, the
gnuplot-result file 'PDFPlotTrial2.sin.table' could not be found.
Maybe you need to enable the shell-escape feature? For pdflatex, this
is '>> pdflatex -shell-escape'. You can also invoke '>> gnuplot
PDFPlotTrial2.sin.table' manually..

! Package pgfplots Warning: You have a plot with empty range.
Replacing it with default and clearing plots.

Latex Error: ./PDFPlotTrial2.tex:13 Extra }, or forgotten \endgroup.

Latex Error: ./PDFPlotTrial2.tex:13 Missing } inserted.

Latex Error: ./PDFPlotTrial2.tex:13 Extra }, or forgotten \endgroup.

Latex Error: ./PDFPlotTrial2.tex:13 Missing } inserted.

Latex Error: ./PDFPlotTrial2.tex:15 LaTeX Error: \begin{tikzpicture}
on input line 5 ended by \end{document}.

I have run  pdflatex --shell-escape PDFPlotTrial2.tex from terminal
(which seemed to work as I got pages of text appearing with no obvious
error messages) and I have upgraded to version 2 of pgf. GNUPlot was
installed with fink and runs OK from typing gnuplot in terminal.

I am now stuck, and no idea what to try next. I am pretty new to this
so it could well be something so obvious that no one is suggesting it.
 Can anyone help.

Many thanks,

Graham