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使子图尽可能大

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使子图尽可能大

我有 6 个图形，将它们放在两行中（每行 3 个子图形）。子图形之间（每行）有水平空白。我将使用这些空格使子图形尽可能大（同时保持其纵横比）。我的代码如下，

\documentclass[conference]{IEEEtran}
\usepackage{algorithm, algpseudocode, dsfont, color, soul, tikz, amsmath, amssymb, amsfonts, amsthm, bbm, bbold, fixmath, mathtools, multirow, boldline, xcolor, colortbl, url, footnote, cite}
\begin{document}
\begin{figure*}
    \begin{subfigure}[t]{0.33\linewidth}
    \includegraphics[width=\linewidth, height=\textheight, keepaspectratio]{x2_RWD.pdf}
    \end{subfigure}
    \begin{subfigure}[t]{0.33\linewidth}
    \includegraphics[width=\linewidth, height=\textheight, keepaspectratio]{x4_RWD.pdf}
    \end{subfigure}
    \begin{subfigure}[t]{0.33\linewidth}
    \includegraphics[width=\linewidth, height=\textheight, keepaspectratio]{x7_RWD.pdf}
    \end{subfigure}
    \begin{subfigure}[t]{0.33\linewidth}
    \includegraphics[width=\linewidth, height=\textheight, keepaspectratio]{x2_NRD.pdf}
    \end{subfigure}
    \begin{subfigure}[t]{0.33\linewidth}
    \includegraphics[width=\linewidth, height=\textheight, keepaspectratio]{x4_NRD.pdf}
    \end{subfigure}
    \begin{subfigure}[t]{0.33\linewidth}
    \includegraphics[width=\linewidth, height=\textheight, keepaspectratio]{x7_NRD.pdf}
    \end{subfigure}
\end{figure*}
\end{document}

答案1

由于您没有利用subfigure环境的任何特殊功能 - 例如设置标题和插入标签以进行交叉引用的功能，因此您不妨使用普通minipage环境。

（在下面的代码中，如果您确实需要提供\caption和\label语句，只需将\begin{minipage}和的所有实例分别改\end{minipage}回\begin{subfigure}和\end{subfigure}。当然，一定要加载subcaption包。）

为了最大限度地增加相邻图形之间可能的水平分离，在/环境之间插入\hfill(或\hspace{\fill}) 指令。minipagesubcaption

在此处输入图片描述

\documentclass[twocolumn]{article}
\usepackage[demo]{graphicx} % omit 'demo' option in real doc.
\begin{document}
\begin{figure*} 
    \begin{minipage}[t]{0.325\linewidth}
    \includegraphics[width=\linewidth]{x2_RWD.pdf}
    \end{minipage}\hfill
    \begin{minipage}[t]{0.325\linewidth}
    \includegraphics[width=\linewidth]{x4_RWD.pdf}
    \end{minipage}\hfill
    \begin{minipage}[t]{0.325\linewidth}
    \includegraphics[width=\linewidth]{x7_RWD.pdf}
    \end{minipage}

    %% leaving a blank line is deliberate, to tell TeX that a line break needs to occur
    \medskip
    \begin{minipage}[t]{0.325\linewidth}
    \includegraphics[width=\linewidth]{x2_NRD.pdf}
    \end{minipage}\hfill
    \begin{minipage}[t]{0.325\linewidth}
    \includegraphics[width=\linewidth]{x4_NRD.pdf}
    \end{minipage}\hfill
    \begin{minipage}[t]{0.325\linewidth}
    \includegraphics[width=\linewidth]{x7_NRD.pdf}
    \end{minipage}
\end{figure*}
\end{document}

附录，在 OP 提供了关于他/她使用的文档类和包的附加信息后发布。关于这些包：(a)fixmath仅在使用 Computer Modern 字体时才应加载 - 此处并非如此。(b) 和不应xcolor独立colortbl加载。(c) 您加载的某些包会自动加载其他一些包；因此，无需明确加载color、amsmath和amsfonts包。(d) 由于所有图形都具有相同的高度，因此[t]可以从设置中省略位置说明符subcaption。

在此处输入图片描述

\documentclass[conference,demo]{IEEEtran} % omit 'demo' option in real doc. 
\usepackage[table]{xcolor} % don't load 'colortbl' and 'xcolor' independently from each other
\usepackage[hyphens]{url} % no need to load 'url' without 'hyphens' option
\usepackage{algorithm, algpseudocode, soul, 
            tikz, mathtools, amssymb, amsthm,
            multirow, footnote, cite, subcaption, 
            dsfont, bbm, bbold, boldline} 

%% 'fixmath' should only be used if Computer Modern
%% fonts are in use -- which is not the case here

\begin{document}

\begin{figure*} 
    \begin{subfigure}{0.325\linewidth}
    \includegraphics[width=\linewidth]{x2_RWD.pdf}
    \caption{\dots} \label{fig:a} 
    \end{subfigure}\hfill
    \begin{subfigure}{0.325\linewidth}
    \includegraphics[width=\linewidth]{x4_RWD.pdf}
    \caption{\dots} \label{fig:b} 
    \end{subfigure}\hfill
    \begin{subfigure}{0.325\linewidth}
    \includegraphics[width=\linewidth]{x7_RWD.pdf}
    \caption{\dots} \label{fig:c} 
    \end{subfigure}

    %% Leaving a blank line is deliberate, to tell 
    %% LaTeX that a line break needs to occur

    \medskip
    \begin{subfigure}{0.325\linewidth}
    \includegraphics[width=\linewidth]{x2_NRD.pdf}
    \caption{\dots} \label{fig:d} 
    \end{subfigure}\hfill
    \begin{subfigure}{0.325\linewidth}
    \includegraphics[width=\linewidth]{x4_NRD.pdf}
    \caption{\dots} \label{fig:e} 
    \end{subfigure}\hfill
    \begin{subfigure}{0.325\linewidth}
    \includegraphics[width=\linewidth]{x7_NRD.pdf}
    \caption{\dots} \label{fig:f} 
    \end{subfigure}
\caption{Overall figure caption} 
\label{fig:overall}
\end{figure*}
\end{document}

答案2

您不需要任何subfigure环境，除非您想要子字幕。

这里的图像在水平和垂直方向上由相同的白色空间分隔\lineskip。

\documentclass[twocolumn]{article}

\usepackage[demo]{graphicx} % demo because I don't have your files
\usepackage{lipsum} % for mock text

\newlength{\maxfigurewidth}

\begin{document}

\lipsum[1-3]

\begin{figure*}

\setlength{\maxfigurewidth}{\dimexpr(\textwidth-2\lineskip)/3}

\includegraphics[width=\maxfigurewidth]{x2_RWD.pdf}\hfil
\includegraphics[width=\maxfigurewidth]{x4_RWD.pdf}\hfil
\includegraphics[width=\maxfigurewidth]{x7_RWD.pdf}

\includegraphics[width=\maxfigurewidth]{x2_NRD.pdf}\hfil
\includegraphics[width=\maxfigurewidth]{x4_NRD.pdf}\hfil
\includegraphics[width=\maxfigurewidth]{x7_NRD.pdf}

\caption{Some global caption}\label{whatever}

\end{figure*}

\lipsum[1-12]

\end{document}

自动\lineskip插入在两行之间，我们手动（用\hfil）将其插入在列之间。

在此处输入图片描述

如果您希望列与列之间或行与行之间没有间距：

\begin{figure*}

\setlength{\maxfigurewidth}{\dimexpr\textwidth/3}

\includegraphics[width=\maxfigurewidth]{x2_RWD.pdf}%
\includegraphics[width=\maxfigurewidth]{x4_RWD.pdf}%
\includegraphics[width=\maxfigurewidth]{x7_RWD.pdf}

\nointerlineskip

\includegraphics[width=\maxfigurewidth]{x2_NRD.pdf}%
\includegraphics[width=\maxfigurewidth]{x4_NRD.pdf}%
\includegraphics[width=\maxfigurewidth]{x7_NRD.pdf}

\caption{Some global caption}\label{whatever}

\end{figure*}

带字幕：

\documentclass[twocolumn]{article}

\usepackage{subcaption}
\usepackage[demo]{graphicx} % demo because I don't have your files
\usepackage{lipsum} % for mock text

\newlength{\maxfigurewidth}

\begin{document}

\lipsum[1-3]

\begin{figure*}

\setlength{\maxfigurewidth}{\dimexpr(\textwidth-2em)/3}

\begin{subfigure}{\maxfigurewidth}
\includegraphics[width=\textwidth]{x2_RWD.pdf}
\caption{one}
\end{subfigure}\hfil
\begin{subfigure}{\maxfigurewidth}
\includegraphics[width=\textwidth]{x4_RWD.pdf}%
\caption{two}
\end{subfigure}\hfil
\begin{subfigure}{\maxfigurewidth}
\includegraphics[width=\textwidth]{x7_RWD.pdf}
\caption{three}
\end{subfigure}

\medskip

\begin{subfigure}{\maxfigurewidth}
\includegraphics[width=\textwidth]{x2_NRD.pdf}%
\caption{four}
\end{subfigure}\hfil
\begin{subfigure}{\maxfigurewidth}
\includegraphics[width=\textwidth]{x4_NRD.pdf}%
\caption{five}
\end{subfigure}\hfil
\begin{subfigure}{\maxfigurewidth}
\includegraphics[width=\textwidth]{x7_NRD.pdf}
\caption{six}
\end{subfigure}

\caption{Some global caption}
\end{figure*}

\lipsum[1-12]

\end{document}

在此处输入图片描述

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