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如何将子图置于 2 x 2 子图矩阵的中心

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如何将子图置于 2 x 2 子图矩阵的中心

我有一个图形，其中有 4 个子图形，以 2 x 2 矩阵显示

\begin{figure}[h]
    \begin{subfigmatrix}{2}
        \subfigure[ALS1]{\includegraphics[height=2.5cm,keepaspectratio]{fig1.png}}
        \subfigure[ALS2]{\includegraphics[height=2.5cm,keepaspectratio]{fig2.png}}
        \subfigure[Hepatitis1]{\includegraphics[height=2.5cm,keepaspectratio]{fig3.png}}
        \subfigure[Hepatitis2]{\includegraphics[height=2.5cm,keepaspectratio]{fig4.png}}
    \end{subfigmatrix}
    \caption{Baseline accuracy (several classifiers and number of observations).}
    \label{fig:baseline}
 \end{figure}

它看起来像这样

在此处输入图片描述

我怎样才能让图像更靠近页面中心，而不是占用整个页面的宽度？基本上它们会位于现在空白的空间中……

谢谢！

答案1

更新：(2014/10/16) 第二种方法是使用patchcmd来etoolbox修补\hfill嵌入的命令，subfigmatrix因为\hfill用于均匀分配一行中的图形。

在此处输入图片描述

代码

\PassOptionsToPackage{}{graphicx}
\documentclass[]{article}
\usepackage[papersize={20cm,25cm}]{geometry}
\usepackage{graphicx}
\usepackage{subfigmat}
\usepackage{etoolbox}
\begin{document}


Before

\begin{figure}[!h]
\begin{subfigmatrix}{3}
   \subfigure[ALS1]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-a}}
   \subfigure[ALS2]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-a}}
   \subfigure[ALS1]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-a}}
   \subfigure[Hepatitis1]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-b}}
   \subfigure[Hepatitis2]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-b}}
   \end{subfigmatrix}
   \caption{Baseline accuracy (several classifiers and number of observations.)}
   \label{fig:baseline1}
 \end{figure}

After:

%\patchcmd{<command>}{<code to replace>}{<code>}{<success>}{<failure>}
\patchcmd{\subfigmatrix}{\hfill}{\hspace{0.8cm}}{}{}

\begin{figure}[!h]
\begin{subfigmatrix}{3}
   \subfigure[ALS1]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-a}}
   \subfigure[ALS2]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-a}}
   \subfigure[ALS1]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-a}}
   \subfigure[Hepatitis1]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-b}}
   \subfigure[Hepatitis2]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-b}}
   \end{subfigmatrix}
   \caption{Baseline accuracy (several classifiers and number of observations.)}
   \label{fig:baseline2}
\end{figure}
\end{document}

这是一种可能性。将subfigmatrix环境放入adjustwidth来自changepage包的环境中。在 adjustwidth 环境中，可以调整左右边距。环境采用两个必需的长度参数：

\begin{adjustwidth}{hleftmargini}{hrightmargini}
 content
\end{adjustwidth}

在此处输入图片描述

代码

\documentclass[]{article}
\usepackage[]{graphicx}%,caption}
\usepackage{subfigmat}
\usepackage{changepage}
\begin{document}


Before

\begin{figure}[!h]
\begin{subfigmatrix}{2}
   \subfigure[ALS1]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-a}}
   \subfigure[ALS2]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-b}}
   \subfigure[Hepatitis1]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-b}}
   \subfigure[Hepatitis2]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-a}}
\end{subfigmatrix}
\caption{Baseline accuracy (several classifiers and number of observations.)}
\label{fig:baseline}
\end{figure}

After:

\begin{figure}[!h]
\begin{adjustwidth}{2.2cm}{2.2cm}
\begin{subfigmatrix}{2}
   \subfigure[ALS1]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-a}}
   \subfigure[ALS2]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-b}}
   \subfigure[Hepatitis1]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-b}}
   \subfigure[Hepatitis2]{\includegraphics[height=2.5cm,keepaspectratio]{example-image-a}}
\end{subfigmatrix}
\caption{Baseline accuracy (several classifiers and number of observations.)}
\label{fig:baseline}
\end{adjustwidth}
\end{figure}
\end{document}

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