子表生成失败

Question

subtable我正在尝试使用from生成三个子表\usepackage{subcaption}，但仍然收到失败消息。有人能帮忙吗？这是我的全部代码：

\documentclass[12pt]{article}

\usepackage{array, boldline}
\newcolumntype{P}[1]{>{\centering\arraybackslash}p{#1}}
\usepackage{booktabs}
\usepackage{subcaption}    

\begin{document}

\begin{table}
\caption{Demand and Supply}
\begin{subtable}
\caption{Market A}
\begin{tabular}{ P{50mm} P{50mm} P{50mm} }
\toprule
Price & Demand & Supply \\
\midrule
35 & 200 & 900 \\
30 & 400 & 750 \\ 
\bottomrule
\end{tabular}
\end{subtable}
\begin{subtable}
\caption{Market B}
\begin{tabular}{ P{50mm} P{50mm} P{50mm} }
\toprule
Price & Demand & Supply \\
\midrule
35 & 300 & 800 \\
30 & 500 & 650 \\ 
\bottomrule
\end{tabular}
\end{subtable}
\end{table}

\end{document}

Answer 1

您需要为 s 指定宽度subtable。但是，您的列非常宽。tabularx您可以在给定约束的情况下最大化列宽。（编辑：删除了多余的居中，正如 Mico 所指出的那样。）

\documentclass[12pt]{article}

\usepackage{array, boldline}
\newcolumntype{Q}{>{\centering\arraybackslash}X}
\usepackage{booktabs}
\usepackage{subcaption} 
\usepackage{tabularx}   

\begin{document}

\begin{table}
\centering
\caption{Demand and Supply}
\begin{subtable}{0.45\textwidth}
\caption{Market A}
\begin{tabularx}{\textwidth}{QQQ}
\toprule
Price & Demand & Supply \\
\midrule
35 & 200 & 900 \\
30 & 400 & 750 \\ 
\bottomrule
\end{tabularx}
\end{subtable}\qquad
\begin{subtable}{0.45\textwidth}
\caption{Market B}
\begin{tabularx}{\textwidth}{QQQ}
\toprule
Price & Demand & Supply \\
\midrule
35 & 300 & 800 \\
30 & 500 & 650 \\ 
\bottomrule
\end{tabularx}
\end{subtable}
\end{table}
\end{document}

或者没有的版本\centering（非常感谢@Mico）。

\documentclass[12pt]{article}

\usepackage{array, boldline}
\newcolumntype{Q}{>{\centering\arraybackslash}X}
\usepackage{booktabs}
\usepackage{subcaption} 
\usepackage{tabularx}   

\begin{document}

\begin{table}
\caption{Demand and Supply}
\quad\begin{subtable}{0.45\textwidth}
\caption{Market A}
\begin{tabularx}{\textwidth}{QQQ}
\toprule
Price & Demand & Supply \\
\midrule
35 & 200 & 900 \\
30 & 400 & 750 \\ 
\bottomrule
\end{tabularx}
\end{subtable}\hfill
\begin{subtable}{0.45\textwidth}
\caption{Market B}
\begin{tabularx}{\textwidth}{QQQ}
\toprule
Price & Demand & Supply \\
\midrule
35 & 300 & 800 \\
30 & 500 & 650 \\ 
\bottomrule
\end{tabularx}
\end{subtable}\quad\mbox{}
\end{table}
\end{document}

Answer 2

您可能想要使用\subcaptionbox：

\documentclass[12pt]{article}

\usepackage{array, boldline}
\usepackage{booktabs}
\usepackage{subcaption}

\begin{document}

\begin{table}
\caption{Demand and Supply}

\subcaptionbox{Market A}{%
  \setlength{\tabcolsep}{0pt}%
  \begin{tabular}{ @{} *{3}{wc{0.16\textwidth}} @{} }
  \toprule
  Price & Demand & Supply \\
  \midrule
  35 & 200 & 900 \\
  30 & 400 & 750 \\ 
  \bottomrule
  \end{tabular}%
}\hfill
\subcaptionbox{Market B}{%
  \setlength{\tabcolsep}{0pt}%
  \begin{tabular}{ @{} *{3}{wc{0.16\textwidth}} @{} }
  \toprule
  Price & Demand & Supply \\
  \midrule
  35 & 300 & 800 \\
  30 & 500 & 650 \\ 
  \bottomrule
  \end{tabular}%
}

\end{table}

\end{document}

我固定了宽度并使用wc{0.16\textwidth}：您有六列，并且设置\tabcolsep为零，宽度应该是0.16666\textwidth，但我在表格之间留了一些空间。