乳胶桌上方的水平支撑

Question

我正在尝试在表格列的顶部放置两个括号，如下图所示。我发现了一个类似的问题这里bigdelim package 并在答案中建议使用。

我尝试使用过度支撑但它对我不起作用或者我没有正确使用它。

下面举一个例子来说明这个问题：

\begin{document}
\documentclass{article}
\usepackage{multirow}
\usepackage{graphicx}
\begin{table}[]
\centering
\caption{}
\label{tab:my-table}
\resizebox{\textwidth}{!}{%
\begin{tabular}{cccccclccccl}
\multicolumn{1}{l}{} &
  {\overbrace\multicolumn{6}{c}{\textbf{\begin{tabular}[c]{@{}c@{}}Case study:1\\ (check 1)\end{tabular}}}} &
  {\overbrace\multicolumn{5}{c}{\textbf{\begin{tabular}[c]{@{}c@{}}Case study:2\\ (check 2)\end{tabular}}}} \\ \hline
\multicolumn{1}{|l|}{Method} &
  \multicolumn{1}{l|}{Class} &
  \multicolumn{1}{l|}{cat} &
  \multicolumn{1}{l|}{ball} &
  \multicolumn{1}{l|}{ali} &
  \multicolumn{1}{l|}{micheal} &
  \multicolumn{1}{l|}{tara} &
  \multicolumn{1}{l|}{cat} &
  \multicolumn{1}{l|}{ball} &
  \multicolumn{1}{l|}{ali} &
  \multicolumn{1}{l|}{micheal} &
  \multicolumn{1}{l|}{tara} \\ \hline
\multicolumn{1}{|c|}{\multirow{4}{*}{kk}} &
  \multicolumn{1}{c|}{R} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{l|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{l|}{} \\ \cline{2-12} 
\multicolumn{1}{|c|}{} &
  \multicolumn{1}{c|}{C} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{l|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{l|}{} \\ \cline{2-12} 
\multicolumn{1}{|c|}{} &
  \multicolumn{1}{c|}{T} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{l|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{l|}{} \\ \cline{2-12} 
\multicolumn{1}{|c|}{} &
  \multicolumn{1}{r|}{\textbf{Average:}} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{l|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{l|}{} \\ \hline
\end{tabular}%
}
\end{table}
\end{document}

Answer 1

\documentclass{article}
\usepackage{multirow}
\usepackage{graphicx}

\begin{document}

\begin{table}[]
\centering
\caption{}
\vspace{\baselineskip}
\label{tab:my-table}
\resizebox{\textwidth}{!}{%
\begin{tabular}{cccccclccccl}
  & & \multicolumn{5}{c}{\textbf{\begin{tabular}[c]{@{}c@{}}Case study:1\\ (check 1)\end{tabular}}} &
  \multicolumn{5}{c}{\textbf{\begin{tabular}[c]{@{}c@{}}Case study:2\\ (check 2)\end{tabular}}} \\
  & & \multicolumn{5}{c}{\downbracefill} & \multicolumn{5}{c}{\downbracefill} \\
 \hline
\multicolumn{1}{|l|}{Method} &
  \multicolumn{1}{l|}{Class} &
  \multicolumn{1}{l|}{cat} &
  \multicolumn{1}{l|}{ball} &
  \multicolumn{1}{l|}{ali} &
  \multicolumn{1}{l|}{micheal} &
  \multicolumn{1}{l|}{tara} &
  \multicolumn{1}{l|}{cat} &
  \multicolumn{1}{l|}{ball} &
  \multicolumn{1}{l|}{ali} &
  \multicolumn{1}{l|}{micheal} &
  \multicolumn{1}{l|}{tara} \\ \hline
\multicolumn{1}{|c|}{\multirow{4}{*}{kk}} &
  \multicolumn{1}{c|}{R} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{l|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{l|}{} \\ \cline{2-12} 
\multicolumn{1}{|c|}{} &
  \multicolumn{1}{c|}{C} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{l|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{l|}{} \\ \cline{2-12} 
\multicolumn{1}{|c|}{} &
  \multicolumn{1}{c|}{T} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{l|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{l|}{} \\ \cline{2-12} 
\multicolumn{1}{|c|}{} &
  \multicolumn{1}{r|}{\textbf{Average:}} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{l|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{c|}{} &
  \multicolumn{1}{l|}{} \\ \hline
\end{tabular}%
}
\end{table}
\end{document}

Answer 2

以下是您可以使用(≥ 6.4，截至 2021-11-23)做{NiceTabular}的事情。nicematrix

\documentclass{article}
\usepackage{geometry}
\usepackage{nicematrix}

\begin{document}

\begin{NiceTabular}{*{12}{c}}
\RowStyle[bold]{}
& & \Block{1-5}{Case study:1\\ (check 1)} &&&&&
\Block{1-5}{Case study: 2\\ (check 2)} \\
\\
\Block[hvlines]{*-*}{}
Method & Class & cat & ball & ali & micheal & tara & cat & ball & ali & micheal & tara \\
\Block{4-1}{kk} & R \\
                & C \\
                & T \\
                & \textbf{Average:} \\
\CodeAfter
  \OverBrace[yshift=1mm,shorten]{3-3}{3-7}{}
  \OverBrace[yshift=1mm,shorten]{3-8}{3-12}{}
\end{NiceTabular}

\end{document}

您需要多次编译（因为nicematrix在后台使用 PGF/Tikz 节点）。