需在文件初始化时加(1) \usepackage{graphicx} (2)\usepackage{subfigure}
2*2图片排列代码如下:
\begin{figure}
\centering
\subfigure[subfigure 1-1]{\label{fig:subfig:a}
\includegraphics[width=0.45\linewidth]{losebg_small}}
\hspace{0.01\linewidth}
\subfigure[subfigure 1-2]{\label{fig:subfig:b}
\includegraphics[width=0.45\linewidth]{losebg_small}}
\vfill
\subfigure[subfigure 2-1]{\label{fig:subfig:a}
\includegraphics[width=0.45\linewidth]{losebg_small}}
\hspace{0.01\linewidth}
\subfigure[subfigure 2-2]{\label{fig:subfig:b}
\includegraphics[width=0.45\linewidth]{losebg_small}}
\caption{two figures}
\label{fig:subfig}
\end{figure}
另,若需子图片的标题置中且格式与图片标题一致,需在初始化时加以下代码:
\makeatletter
\long\def\@makecaption#1#2{\ifx\@captype\@IEEEtablestring%
\footnotesize\begin{center}{\normalfont\footnotesize #1}\\
{\normalfont\footnotesize\scshape #2}\end{center}%
\@IEEEtablecaptionsepspace
\else
\@IEEEfigurecaptionsepspace
\setbox\@tempboxa\hbox{\normalfont\footnotesize {#1.}~~ #2}%
\ifdim \wd\@tempboxa >\hsize%\setbox\@tempboxa\hbox{\normalfont\footnotesize {#1.}~~ }%
\parbox[t]{\hsize}{\normalfont\footnotesize \noindent\unhbox\@tempboxa#2}%
\else
\hbox to\hsize{\normalfont\footnotesize\hfil\box\@tempboxa\hfil}\fi\fi}
\makeatother
图片排列部分摘自:http://blog.sina.com.cn/s/blog_656681710100qhqw.html