pdf 输出中子图的随机编号和间距

Question

我的 pdf 输出中的子图的编号有点随机，但在编辑器中编号是正确的。

子图从 (a) 到 (d) 正确编号，但导出为 pdf 时，我得到的结果如下：

我还想问为什么第一行图的水平间距不一样？每行的设置都一样，但第一行却不一样。

我不知道如何修复这个问题。以下是LaTeX该图的代码：

%% LyX 2.3.2-2 created this file.  For more info, see http://www.lyx.org/.
%% Do not edit unless you really know what you are doing.
\documentclass[english]{IEEEtran}
\usepackage[T1]{fontenc}
\usepackage[latin9]{inputenc}
\usepackage{graphicx}

\makeatletter
\@ifundefined{showcaptionsetup}{}{%
 \PassOptionsToPackage{caption=false}{subfig}}
\usepackage{subfig}
\makeatother

\usepackage{babel}
\begin{document}
\begin{figure*}
\subfloat[]{\subfloat{\includegraphics[width=0.28\paperwidth]{volume_4_0_ground_truth}}\enskip{}\subfloat{\includegraphics[width=0.28\paperwidth]{volume_4_1_ground_truth}}\enskip{}\subfloat{\includegraphics[width=0.28\paperwidth]{volume_4_2_ground_truth}}}

\subfloat[]{\subfloat{\includegraphics[width=0.28\paperwidth]{volume_4_0_ground_truth}}\enskip{}\subfloat{\includegraphics[width=0.28\paperwidth]{volume_4_1_ground_truth}}\enskip{}\subfloat{\includegraphics[width=0.28\paperwidth]{volume_4_2_ground_truth}}}

\subfloat[]{\subfloat{\includegraphics[width=0.28\paperwidth]{volume_4_0_ground_truth}}\enskip{}\subfloat{\includegraphics[width=0.28\paperwidth]{volume_4_1_ground_truth}}\enskip{}\subfloat{\includegraphics[width=0.28\paperwidth]{volume_4_2_ground_truth}}}

\subfloat[]{\subfloat{\includegraphics[width=0.28\paperwidth]{volume_4_0_ground_truth}}\enskip{}\subfloat{\includegraphics[width=0.28\paperwidth]{volume_4_1_ground_truth}}\enskip{}\subfloat{\includegraphics[width=0.28\paperwidth]{volume_4_2_ground_truth}}}

\caption{Comparison}
\end{figure*}

\end{document}

Answer 1

如果我理解正确的话，您只需要四个标题（从（a）到（d），每行一个），您可以简单地删除嵌套的\subfloat：

\documentclass[english]{IEEEtran}
\usepackage[T1]{fontenc}
\usepackage[latin9]{inputenc}
\usepackage{graphicx}

\makeatletter
\@ifundefined{showcaptionsetup}{}{%
 \PassOptionsToPackage{caption=false}{subfig}}
\usepackage{subfig}
\makeatother

\usepackage{babel}
\begin{document}
\begin{figure*}
\centering
\subfloat[]{%
    \includegraphics[width=0.25\paperwidth]{example-image}\enskip
    \includegraphics[width=0.25\paperwidth]{example-image}\enskip
    \includegraphics[width=0.25\paperwidth]{example-image}%
}

\subfloat[]{%
    \includegraphics[width=0.25\paperwidth]{example-image}\enskip
    \includegraphics[width=0.25\paperwidth]{example-image}\enskip
    \includegraphics[width=0.25\paperwidth]{example-image}%
}

\subfloat[]{%
    \includegraphics[width=0.25\paperwidth]{example-image}\enskip
    \includegraphics[width=0.25\paperwidth]{example-image}\enskip
    \includegraphics[width=0.25\paperwidth]{example-image}%
}

\subfloat[]{%
    \includegraphics[width=0.25\paperwidth]{example-image}\enskip
    \includegraphics[width=0.25\paperwidth]{example-image}\enskip
    \includegraphics[width=0.25\paperwidth]{example-image}%
}

\caption{Comparison}
\end{figure*}

\end{document}

Answer 2

使用\includegraphics所需宽度的小页面内的命令。

\documentclass[english]{article}
\usepackage[T1]{fontenc}
\usepackage{graphicx}
\usepackage{subcaption}
\begin{document}

\begin{figure*}
\begin{minipage}{0.3\textwidth}
\includegraphics[width=\linewidth]{volume_4_0_ground_truth}
\end{minipage}\hspace*{\fill}
\begin{minipage}{0.3\textwidth}
\includegraphics[width=\linewidth]{volume_4_1_ground_truth}
\end{minipage}\hspace*{\fill}
\begin{minipage}{0.3\textwidth}
\includegraphics[width=\linewidth]{volume_4_2_ground_truth}
\end{minipage}\vspace{15pt}

\begin{minipage}{0.3\textwidth}
\includegraphics[width=\linewidth]{volume_4_0_ground_truth}
\end{minipage}\hspace*{\fill}
\begin{minipage}{0.3\textwidth}
\includegraphics[width=\linewidth]{volume_4_1_ground_truth}
\end{minipage}\hspace*{\fill}
\begin{minipage}{0.3\textwidth}
\includegraphics[width=\linewidth]{volume_4_2_ground_truth}
\end{minipage}
\caption{Comparison}
\end{figure*}

\end{document}

如果愿意，可以使用以下命令添加标题：\captionof{subfigure}{Caption (a)}