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On a map I used different symbols to indicate different structures. I used this answer to draw on the screenshot of a map website. I defined three types of symbols: 

\tikzstyle{ARA} = [blue,regular polygon,regular polygon sides=3, draw, shape border rotate=180,inner sep=0pt,minimum size=10pt,fill=blue]
\tikzstyle{wfluss} = [->,blue,thick]
\tikzstyle{probe} = [red,diamond,draw,inner sep=0pt,minimum size=10pt,fill=red]

I want to have the legend (i.e. the part explaining the symbols) to be in the caption, i.e. that the red and blue symbols are explained in the caption. enter image description here

Max R
  • 308

1 Answers1

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If you put these tikz pictures in \saveboxes, they are safe to use in captions.

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{shapes}

\tikzset{ARA/.style={blue,regular polygon,regular polygon sides=3, draw, shape border rotate=180,inner sep=0pt,minimum size=10pt,fill=blue},
probe/.style={red,diamond,draw,inner sep=0pt,minimum size=10pt,fill=red}}
\newsavebox{\nodeARA}
\newsavebox{\nodeprobe}
\sbox\nodeARA{\tikz{\node[ARA]{};}}
\sbox\nodeprobe{\tikz{\node[probe]{};}}
\begin{document}
\begin{figure}
\centering
\begin{tikzpicture}
\node{\includegraphics{example-image-duck}};
\end{tikzpicture}
\caption{\usebox{\nodeARA} represents \dots while \usebox{\nodeprobe} stands for \dots.
}
\end{figure}
\end{document}

enter image description here

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    BTW \tikzstyle is deprecated. –  Apr 27 '19 at 19:44
  • Thank you! I will update the code and include this new code. – Max R Apr 27 '19 at 20:03
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    It also works with \listoffigures, although you lose the spaces after the saveboxes. \usebox gets expanded as bunch of commands ending with \relax. You can fix it using {\usebox\nodeARA} for example. – John Kormylo Apr 27 '19 at 21:53