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如何将 2 个子图排列在 1 个子图之上？

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如何将 2 个子图排列在 1 个子图之上？

我想将这些图形排列成两个图形相邻，一个图形在下面，就像一个倒三角形，这样它们就可以放在一页上，并且大小合理。我该怎么做？

\begin{figure}[H]
\centering
   \begin{subfigure}[H]{0.75\textwidth}
   \centering
   \includegraphics[width=0.75\linewidth]{dragratio}
   \caption{}
   \label{fig:dragratio} 
\end{subfigure}

\begin{subfigure}[H]{0.75\textwidth}
   \centering
   \includegraphics[width=0.75\linewidth]{dragratio2}
   \caption{}
   \label{fig:dragratio2}
\end{subfigure}

\begin{subfigure}[H]{0.75\textwidth}
   \centering
   \includegraphics[width=0.75\linewidth]{dragratio3}
   \caption{}
   \label{fig:dragratio3}
\end{subfigure}
\centering
\caption{(a) Numerical solutions for the constant-curvature body, $F(x)=x(1-x), x \in (0,1)$, at small times. This figure shows the drag force $D$ versus the scaled mass $M$ for various values of the ratio between the inertia $I$ and the mass $M$, i.e. for various values of $R=\frac{I}{M}$. Here $g=10$ and $A=0.7$. (b) As for (a) but with $A=0.5$. (c) As for (a) and (b) but with $A=0.25$.}
\end{figure}

答案1

我认为以下内容可以实现您的目标：

\documentclass{book}

\usepackage{graphicx}
\usepackage{subcaption}

\begin{document}
\begin{figure}[H]
\centering
   \begin{subfigure}{0.45\linewidth}
   \centering
   \includegraphics[width=\linewidth]{Example-Image}
   \caption{}
   \label{fig:dragratio} 
\end{subfigure}
\hfill
\begin{subfigure}{0.45\linewidth}
   \centering
   \includegraphics[width=\linewidth]{Example-Image}
   \caption{}
   \label{fig:dragratio2}
\end{subfigure}
\\[\baselineskip]
\begin{subfigure}[H]{0.45\linewidth}
   \centering
   \includegraphics[width=\linewidth]{Example-Image}
   \caption{}
   \label{fig:dragratio3}
\end{subfigure}
\centering
\caption{(a) Numerical solutions for the constant-curvature body, $F(x)=x(1-x), x \in (0,1)$, at small times. This figure shows the drag force $D$ versus the scaled mass $M$ for various values of the ratio between the inertia $I$ and the mass $M$, i.e. for various values of $R=\frac{I}{M}$. Here $g=10$ and $A=0.7$. (b) As for (a) but with $A=0.5$. (c) As for (a) and (b) but with $A=0.25$.}
\end{figure}
\end{document}

输出

subfigure请注意，s的大小0.45\linewidth要在它们之间留出一些空间，但width的大小要在子图内includegraphics完整\linewidth，即子图的整个宽度。

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