Hi all,
I'm using groupplot because it is really easy to draw things like an
arrow between two plots. However, I also need to use the external
library. Now I tried to create a legend outside of an axis but this does
not work as long as I'm using the external library. Here is a minimal
example:
\documentclass{minimal}
\usepackage{pgfplots}
\usetikzlibrary{pgfplots.groupplots}
\pgfplotsset{compat=1.3}
%\usepgfplotslibrary{external}
%\tikzexternalize
\begin{document}
\centering
\begin{tikzpicture}
\begin{groupplot}[group style={group size=2 by 1, horizontal sep=2cm}]
\nextgroupplot[legend entries={a;,b},
legend to name=named,
]
\addplot {x};
\addplot {x*x};
\nextgroupplot[xmin=1, xmax=2]
\addplot {x};
\addplot {x*x};
\end{groupplot}
\draw[thick,black,->,shorten >=20pt,shorten <=2pt]
(group c1r1.east) -- (group c2r1.west);
\end{tikzpicture}
\\
\ref{named}
\end{document}
If you uncomment the two lines then you will get an compile error. Does
someone has an idea how to circumvent this?
Regards,
Stefan
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