图表按章节编号的格式

Question

我使用 按节对图表进行编号\counterwithin。但是，图表的编号不是 1.1、1.2、2.1、2.2 等，而是 11、12、21、22 等。有没有办法重新插入小数点？

以下是 MWE：

\documentclass{article}

\usepackage{float}
\counterwithin{figure}{section}

\begin{document}

\section{foo}

\begin{figure}[H]
\centering
\rule{1cm}{1cm}% placeholder for graphic
\caption{Should be 1.1}
\end{figure}

\begin{figure}[H]
\centering
\rule{1cm}{1cm}% placeholder for graphic
\caption{Should be 1.2}
\end{figure}

\section{foo2}

\begin{figure}[H]
\centering
\rule{1cm}{1cm}% placeholder for graphic
\caption{Should be 2.1}
\end{figure}

\begin{figure}[H]
\centering
\rule{1cm}{1cm}% placeholder for graphic
\caption{Should be 2.2}
\end{figure}

\end{document}

Answer 1

使用\numberwithin{figure}{section}来自数学包裹

\documentclass{article}

\usepackage{amsmath,float}

\numberwithin{figure}{section}

\begin{document}


\section{foo}

\begin{figure}[H]
\centering
\rule{1cm}{1cm}% placeholder for graphic
\caption{Should be 1.1}
\end{figure}

\begin{figure}[H]
\centering
\rule{1cm}{1cm}% placeholder for graphic
\caption{Should be 1.2}
\end{figure}

\section{foo2}

\begin{figure}[H]
\centering
\rule{1cm}{1cm}% placeholder for graphic
\caption{Should be 2.1}
\end{figure}

\begin{figure}[H]
\centering
\rule{1cm}{1cm}% placeholder for graphic
\caption{Should be 2.2}
\end{figure}

\end{document}

Answer 2

您提供的代码运行良好。看起来您的完整代码修改了\thefigure序言中某处的定义。您可以使用\renewcommand{\thefigure}{\arabic{section}.\arabic{figure}}as 方法来明确重新定义\thefigure图形标签在由 LaTeX 排版时的表示形式。这里，section是部分计数器，figure是图形计数器。

\documentclass{article}

\usepackage{float}
\counterwithin{figure}{section}
\renewcommand{\thefigure}{\arabic{section}.\arabic{figure}}

\begin{document}

\section{foo}

\begin{figure}[H]
\centering
\rule{1cm}{1cm}% placeholder for graphic
\caption{Should be 1.1}
\end{figure}

\begin{figure}[H]
\centering
\rule{1cm}{1cm}% placeholder for graphic
\caption{Should be 1.2}
\end{figure}

\section{foo2}

\begin{figure}[H]
\centering
\rule{1cm}{1cm}% placeholder for graphic
\caption{Should be 2.1}
\end{figure}

\begin{figure}[H]
\centering
\rule{1cm}{1cm}% placeholder for graphic
\caption{Should be 2.2}
\end{figure}

\end{document}