我想在标题中添加图例，类似于这问题。但我想使用 gnuplot 环境，如以下 MWE 中所示。不幸的是，我得到了“??”，因为\label{test}它不起作用。是否可以使用“gnuplot”环境来做到这一点？或者由 @pluton 提供，这是唯一的方法吗？
我正在从事的 MWE 工作：
\documentclass[12pt,a4paper,english]{article}
\usepackage{lmodern}
\usepackage{lipsum}
\usepackage{caption}
\usepackage{pgfplots}
\usepackage{tikz}
\usepackage{gnuplot-lua-tikz}
\usepackage[shell]{gnuplottex}
\begin{document}
\begin{figure}[!ht]
\centering
\captionsetup{width=9.5cm}
\begin{tikzpicture}
\draw [draw=none,use as bounding box] (0cm,0cm) rectangle (14cm,8cm);{
\begin{gnuplot}[terminal=tikz,terminaloptions={size 14cm, 8cm}]
plot sin(x) w lines t 'sin(x)',\
cos(x) w lines t 'cos(x)'
\label{test} %gives '??' on the pdf, not working
\end{gnuplot}
};
%\addlegendentry{Legend for only desired lines} % Did not work
\node[draw=none, text width=1cm] at (-5.0,1.0) {$sin(x)$}; %this has no sample
\end{tikzpicture}
\caption[Caption in ToC]{This is a plot about colored curves: \ref{test}}
\end{figure}
\end{document}
感谢您的评论，我得到了我想要的。
血管内皮生长因子（创造了一个传奇\caption）
\documentclass[12pt,a4paper,english]{article}
\usepackage{lmodern}
\usepackage{lipsum}
\usepackage{caption}
\usepackage{pgfplots}
\usepackage{tikz}
\usepackage{gnuplot-lua-tikz}
\usepackage[shell]{gnuplottex}
\begin{document}
\begin{figure}[!ht]
\centering
\captionsetup{width=9.5cm}
\begin{tikzpicture}
\draw [draw=none,use as bounding box] (0cm,0cm) rectangle (14cm,8cm);{
\begin{gnuplot}[terminal=tikz,terminaloptions={size 14cm, 8cm}]
set style line 1 lc rgb "black" lt 1 lw 1 pointinterval 1 pt 1
set style line 11 lc rgb "black" lt 1 lw 5 pointinterval 5 pt 12
plot sin(x) w lines ls 1 t 'sin(x)',\
cos(x) w lines ls 11 t 'cos(x)'
\end{gnuplot}
};
\node[draw=none, text width=1cm] at (-5.0,1.0) {$sin(x)$}; %this has no sample
\end{tikzpicture}
\caption[Caption in ToC]{
\begin{tikzpicture}[baseline=-.5ex,line join=round,line cap=round,color=black]
%First legend
\pgfsetlinewidth{1\gpbaselw}
\node[draw=none, text width=1cm] at (0.0,0.0) {$sin(x)$}; %this has no sample
\draw (0.75,0) -- (1.10,0);
%Creat following legend
\pgfsetlinewidth{5\gpbaselw}
\node[draw=none, text width=1cm] at (1.8,0.0) {$cos(x)$}; %this has no sample
\draw (2.5,0) -- (2.85,0);
\end{tikzpicture}
}
\end{figure}
\end{document}
工作目标
