以下是我的论文序言：
\documentclass[12pt,english]{article}
\usepackage{subfig}
\usepackage{graphicx} % for graphics
\usepackage{subfigmat}
%\usepackage[draft]{graphicx} % temporarily turn off graphicx
%\usepackage{subfig}
%\setcounter{lofdepth}{2}
%\usepackage{parskip}
\usepackage{caption} % Enable figure captions or figure notes
\usepackage{subcaption} %Further enable sub captions
\usepackage{booktabs} %for table
\usepackage{amsmath} %for equations and mathematical symbols
\usepackage{amssymb}
\usepackage{rotating} %for table rotation
\usepackage{lscape}
\usepackage{float} % allow tables to self adjust
\usepackage{morefloats}
\usepackage[flushleft]{threeparttable}
\usepackage{tabularx}
\usepackage{adjustbox}
\usepackage{hyperref} % allow hyper referencing
\usepackage{breakcites}
\usepackage{csquotes}
\usepackage{enumerate} % to get all that enumeration offers
\captionsetup{font=footnotesize}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage[round]{natbib} % for bibliography
%\bibliographystyle{cambridgeauthordate}
\usepackage{apalike}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%\usepackage[natbibapa]{apacite} % load "apacite" with option "natbibapa"
%\bibliographystyle{apacite} % specify the bibliography style
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%{plainnat} % regular bibliography
\usepackage[usenames, dvipsnames]{color} % coloring fonts
%%%%%%%%%%%%%%%%%%%%%%%
\usepackage[T1]{fontenc}
\usepackage{array}
\usepackage{multirow}
\usepackage{esint}
\usepackage[toc,page]{appendix}
\renewcommand{\cite}{\citeyear}
\newtheorem{theorem}{Theorem}
\newtheorem{corollary}{Corollary}
\newtheorem{assumption}{Assumption}
\newtheorem{definition}{Definition}
\newtheorem{proposition}{Proposition}
\makeatletter
\providecommand{\tabularnewline}{\\}
\usepackage{psfrag}\usepackage{multirow}\@ifundefined{definecolor}{\usepackage{color}}{}
\usepackage{colortbl}\usepackage{float}\usepackage{bm}\usepackage[metapost]{mfpic}
% Tree-saver - if turn this on you lose page numbers
\setlength{\textwidth}{8.276in}
\setlength{\textheight}{11.405in}
% Allow 1 in margin on each side and nothing else
\addtolength{\textwidth}{-2in}
\addtolength{\textheight}{-2in}
\setlength{\oddsidemargin}{0pt}
\setlength{\evensidemargin}{\oddsidemargin}
\setlength{\topmargin}{0pt}
\addtolength{\topmargin}{-\headheight}
\addtolength{\topmargin}{-\headsep}
\newcommand{\ds}{\displaystyle}
\newcommand{\bs}{\boldsymbol}
%\pagenumbering{roman}
\parindent=0pt
\parskip=5pt
\def\@cite#1#2{{#1\if@tempswa , #2\fi}}
\def\@biblabel#1{}
\def\ph#1{\phantom{#1}}
\renewcommand{\baselinestretch}{1.0}
\title{}
\author{}
\usepackage{babel}
\date{\today}
%\usepackage{calc} % To reset the counter in the document after title page
\makeatother
\begin{document}
\maketitle
\begin{abstract}
我必须使用subfigure包
\begin{figure}[!ht]
\setlength{\lineskip}{1ex}% increase spacing
\centering
\subfloat[1998:1]{\includegraphics[width=.3\textwidth]{A1}}%
\hspace{\fill}
\subfloat[1998:2]{\includegraphics[width=.3\textwidth]{A2}}%
\hspace{\fill}
\subfloat[1999:1]{\includegraphics[width=.3\textwidth]{A3}}%
\hspace{\fill}
\subfloat[1999:2]{\includegraphics[width=.3\textwidth]{A4}}%
\hspace{\fill}
\subfloat[2000:1]{\includegraphics[width=.3\textwidth]{A5}}%
\hspace{\fill}
\subfloat[2000:2]{\includegraphics[width=.3\textwidth]{A6}}%
\hspace{\fill}
\subfloat[2001:1]{\includegraphics[width=.3\textwidth]{A7}}%
\hspace{\fill}
\subfloat[2001:2]{\includegraphics[width=.3\textwidth]{A8}}
\hspace{\fill}
\subfloat[2002:1][![enter image description here][1]][1]{\includegraphics[width=.3\textwidth]{A9}}
\hspace{\fill}
\subfloat[2002:2]{\includegraphics[width=.3\textwidth]{A10}}
\hspace{\fill}
\subfloat[2003:1]{\includegraphics[width=.3\textwidth]{A11}}
\hspace{\fill}
\subfloat[2003:2]{\includegraphics[width=.3\textwidth]{A12}}
\caption{\label{figure12} Dynamic crisis transmission maps from 1998-2003}
\end{figure}
但我最终收到如下错误：
LaTeX Error: Command \c@subfigure already defined.
Or name \end... illegal, see p.192 of the manual.
See the LaTeX manual or LaTeX Companion for explanation.
Type H <return> for immediate help.
...
l.113 \newcounter{subfigure}
[figure]
Your command was ignored.
Type I <command> <return> to replace it with another command,
or <return> to continue without it.
附件中还有一些错误
我怎样才能消除这些错误？
答案1
只需使用 subcaption 包即可。而不是\subfloat[]{}使用\subcaptionbox{}{}。
子标题文档非常好；您应该阅读它。https://ctan.org/pkg/subcaption?lang=en
\begin{figure}[!ht]
...
\subcaptionbox{1998:1}{\includegraphics[width=.3\textwidth]{A1}} \\
\subcaptionbox{1998:2}{\includegraphics[width=.3\textwidth]{A2}} \\
...
\caption{\label{figure12} Dynamic crisis transmission maps from 1998-2003}
\end{figure}
我还认为同时使用这两个命令\centering以及所有这些\hspace{\fill}命令是没有意义的。
答案2
为了解决您的问题并获得最小的工作示例，您可以删除序言中的大部分命令。
对我来说，你似乎只是复制了互联网和/或同事中其他 tex 文件的部分内容不知道复制的 tex 代码会做什么。这是最糟糕的 tex 方式...
一般规则：只使用您理解的代码。只使用包已经阅读过文档（输入texdoc subcaption以获取显示的包的文档subcaption）！
现在请看一下以下 mwe：
\documentclass[12pt,english]{article}
\usepackage[T1]{fontenc}
\usepackage{babel}
\usepackage[showframe]{geometry} % <====================================
\usepackage[usenames,table,dvipsnames]{xcolor}
\usepackage{graphicx} % for graphics
\usepackage{caption} % Enable figure captions or figure notes
\usepackage{subcaption} %Further enable sub captions <==================
\captionsetup{font=footnotesize}
\usepackage{hyperref} % allow hyper referencing
\title{Title}
\author{Author}
\date{\today}
\begin{document}
\maketitle
\begin{abstract}
abstract
\end{abstract}
\begin{figure}[!ht]
%\setlength{\lineskip}{1ex}% increase spacing
\centering
\subcaptionbox{1998:1}{\includegraphics[width=.3\textwidth]{example-image-a}}
\subcaptionbox{1998:2}{\includegraphics[width=.3\textwidth]{example-image-b}}
\subcaptionbox{1999:1}{\includegraphics[width=.3\textwidth]{example-image-c}}
\subcaptionbox{1999:2}{\includegraphics[width=.3\textwidth]{example-image-a}}
\subcaptionbox{2000:1}{\includegraphics[width=.3\textwidth]{example-image-b}}
\subcaptionbox{2000:2}{\includegraphics[width=.3\textwidth]{example-image-c}}
\subcaptionbox{2001:1}{\includegraphics[width=.3\textwidth]{example-image-a}}
\subcaptionbox{2001:2}{\includegraphics[width=.3\textwidth]{example-image-b}}
\subcaptionbox{2002:1}{\includegraphics[width=.3\textwidth]{example-image-c}}
\subcaptionbox{2002:2}{\includegraphics[width=.3\textwidth]{example-image-a}}
\subcaptionbox{2003:1}{\includegraphics[width=.3\textwidth]{example-image-b}}
\subcaptionbox{2003:2}{\includegraphics[width=.3\textwidth]{example-image-c}}
\caption{\label{figure12} Dynamic crisis transmission maps from 1998-2003}
\end{figure}
\end{document}
三个示例图像后的空白行会生成一个新行，因此您可以获得排列在一行中的三个子图。
结果是：
请注意，我使用了showframe包选项geometry来可视化打字区域和页边距。要调整页边距，请使用geometry（texdoc geometry），不要使用诸如等老式命令\setlength{\textwidth}{8.276in}...
请查看调用包的正确顺序（大多数情况下hyperref是最后调用！）...