本文主要是介绍【漫漫科研路\pgfplots】子图的多种画法，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
在科研论文写作中，有时候为了横向、纵向对比或者节省空间，我们需要画子图，在MATLAB中可以通过subplot命令来实现。在Latex中有以下几种方法进行子图的绘制：
- 使用subfig宏包（有可能与hyperref宏包冲突，推荐使用subcaption宏包），主要格式为：
\begin{figure}\subfloat[]{}\subfloat[]{}\\\subfloat[]{}\subfloat[]{}\end{figure}- 使用subcaption宏包，主要格式为：
\begin{figure}\subcaptionbox{}{}\subcaptionbox{}{}\\\subcaptionbox{}{}\subcaptionbox{}{}\end{figure}- 使用groupplot宏包，主要格式为：
\begin{figure}
\centering
\begin{tikzpicture}
\begin{groupplot}
\nextgroupplot
\addplot {x};
\nextgroupplot
\end{groupplot}
\end{tikzpicture}
\end{figure}- 使用matrix宏包，主要格式为：
\begin{figure}
\centering
\begin{tikzpicture}
\matrix{\begin{axis}\addplot {x};\end{axis}\begin{axis}\addplot {x};\end{axis}}
\end{tikzpicture}
\end{figure}下面给出上述各种情况的具体代码实现以及示意图：
- 使用subfig宏包
代码如下：
\documentclass{article}
\usepackage[dvipdfm]{graphicx}
\def\pgfsysdriver{pgfsys-dvipdfmx.def}
\usepackage{tikz}
\usepackage{pgfplots}
\usepackage{subfig}%使用子图包，可能与hyperref冲突
\usepackage{float}
\usepackage{cite}
\usepackage[colorlinks,dvipdfm,pdfpagemode=UseOutlines,pdfstartview=FitH,anchorcolor=green,citecolor=blue,linkcolor=red,hyperindex=true,pagebackref,bookmarksnumbered,bookmarksopenlevel=2,colorlinks]{hyperref}\pgfplotsset{width=6cm,compat=1.15}\begin{document}
\begin{figure}
\begin{center}
\subfloat[\label{subfig1}]{
\begin{tikzpicture}
\begin{axis}[
legend columns=-1,%the legend are plotted horizontally
legend entries={$x$},
legend to name=named,% stored in named, not plotted in the figure
title={subfig1},
]
\addplot {x};\label{curvex}
\end{axis}
\end{tikzpicture}\label{subfig2}}
\subfloat[]{
\begin{tikzpicture}
\begin{axis}[title={subfig2}]
\addplot {x};
\end{axis}
\end{tikzpicture}\label{subfig2}}
\end{center}
\caption{\hspace{1em}Two subfigures.}\label{f1}
\end{figure}
As depicted in Figures~\ref{subfig1} and \ref{subfig2}, the subfigures of Figure~\ref{f1}, \ref{curvex} represents function $f(x)=x$.\end{document} - 使用subcaption宏包
代码如下：
\documentclass{article}
\usepackage[dvipdfm]{graphicx}
\def\pgfsysdriver{pgfsys-dvipdfmx.def}
\usepackage{tikz}
\usepackage{pgfplots}
%\usepackage{subfig}
\usepackage[hypcap=true,labelsep=period,font=small]{caption}% 图的标题设置Fig.
\usepackage[hypcap=true]{subcaption}%用于画子图 可以适配hyperref包
\usepackage{float}
\usepackage[colorlinks,dvipdfm,pdfpagemode=UseOutlines,pdfstartview=FitH,anchorcolor=green,citecolor=blue,linkcolor=red,hyperindex=true,pagebackref,bookmarksnumbered,bookmarksopenlevel=2,colorlinks]{hyperref}
\pgfplotsset{width=6cm,compat=1.15}
\begin{document}
\begin{figure}
\begin{center}
\subcaptionbox{\label{subfig1}}{
\begin{tikzpicture}
\begin{axis}[
legend columns=-1,%the legend are plotted horizontally
legend entries={$x$},
legend to name=named,% stored in named
title={subfig1},
]
\addplot {x};\label{curvex}
\end{axis}
\end{tikzpicture}}
\subcaptionbox{\label{subfig2}}{
\begin{tikzpicture}
\begin{axis}[title={subfig2}]
\addplot {x};
\end{axis}
\end{tikzpicture}}
\end{center}
\caption{\hspace{1em}Two subfigures.}\label{f1}
\end{figure}As depicted in Figures~\ref{subfig1} and \ref{subfig2}, the subfigures of Figure~\ref{f1}, \ref{curvex} represents function $f(x)=x$.\end{document} - 使用groupplot宏包
代码如下：
\documentclass{article}
\usepackage[dvipdfm]{graphicx}
\def\pgfsysdriver{pgfsys-dvipdfmx.def}
\usepackage{tikz}
\usepackage{pgfplots}
\pgfplotsset{width=7cm,compat=1.15}
\usepgfplotslibrary{groupplots}
\usepackage{caption}
\usepackage{subcaption}
\usepackage[colorlinks,dvipdfm,pdfpagemode=UseOutlines,pdfstartview=FitH,anchorcolor=green,citecolor=blue,linkcolor=red,hyperindex=true,pagebackref,bookmarksnumbered,bookmarksopenlevel=2,colorlinks]{hyperref}
\begin{document}
\begin{figure}[htb]
\centering
\begin{tikzpicture}
\begin{groupplot}[
group style={
group name=my plots,
group size=2 by 2,
xlabels at=edge bottom,
xlabels at=all,
ylabels at=edge left,
x descriptions at=edge bottom,
},
footnotesize,
width=6cm,
height=6cm,
%
xlabel=$x$,
ylabel=$f(x)$,
]
\nextgroupplot
\addplot {x};
\node [text width=1em,anchor=north west] at (rel axis cs: 0,1){\subcaption{\label{f11}}};%<- changed
\nextgroupplot
\addplot {x^2};
\nextgroupplot
\addplot {x^3};
\nextgroupplot
\addplot {x^4};
\end{groupplot}
\end{tikzpicture}
\caption{\hspace{1em}Four subfigures.}\label{f1}
\end{figure}
How to refer to subfigure~\ref{f11} in Figure~\ref{f1}.\end{document} - 使用matrix宏包
代码如下：
\documentclass{article}
\usepackage[dvipdfm]{graphicx}
\def\pgfsysdriver{pgfsys-dvipdfmx.def}
\usepackage{tikz}
\usepackage{pgfplots}
\pgfplotsset{width=7cm,compat=1.15}
\usepgfplotslibrary{groupplots}
\usetikzlibrary{matrix}
\usepackage{caption}
\usepackage{subcaption}
\usepackage[colorlinks,dvipdfm,pdfpagemode=UseOutlines,pdfstartview=FitH,anchorcolor=green,citecolor=blue,linkcolor=red,hyperindex=true,pagebackref,bookmarksnumbered,bookmarksopenlevel=2,colorlinks]{hyperref}
\begin{document}
\begin{figure}[htb]
\centering
\begin{tikzpicture}
\pgfplotsset{small}
\matrix {
\begin{axis}[ylabel={$f(x)=x$},ylabel style={font=\small}]
\addplot {x};
\node [text width=1em,anchor=north west] at (rel axis cs: 0,1){\subcaption{\label{f11}}};%<- changed
\end{axis}
&
% differently large labels are aligned automatically:
\begin{axis}[ylabel={$f(x)=x^2$},ylabel style={font=\small}]
\addplot {x^2};
\end{axis}
\\
\begin{axis}[ylabel={$f(x)=x^3$},ylabel style={font=\small},xlabel=$x$,xlabel style={font=\small}]
\addplot {x^3};
\end{axis}
&
\begin{axis}[ylabel={$f(x)=x^4$},ylabel style={font=\small},xlabel=$x$,xlabel style={font=\small}]
\addplot {x^4};
\end{axis}
\\
};
\end{tikzpicture}
\caption{\hspace{1em}Four subfigures.}\label{f1}
\end{figure}
How to refer to subfigure~\ref{f11} in Figure~\ref{f1}.\end{document} Note: 第三种和第四种方法不适合需要单独引用每一个子图的情况，比较适合把四张图看成一个整体的情况。
参考文献：
[1] pgfplots manual: http://pgfplots.sourceforge.net/pgfplots.pdf
本科舍友不幸得了黑色素癌, 在此恳求大家能给予帮助，在此谢谢大家！以下是水滴筹的链接：
https://www.shuidichou.com/cf/contribute/7d975cfc-e508-4549-acb1-5a31ceb759a1?channel=wx_charity_pyq&source=7hEPKZfbC7kzc7ndTKDD6cZriDdYH4TQ&forwardFrom=5&sharedv=2008
今天发现该链接已经提现了，但是已筹金额未达预期，期望各位通过左下角的微信扫码进行捐款，我将悉数给予舍友。再次感谢大家的帮助！
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