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跨特定列的规则

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跨特定列的规则

我想创建一个如下所示的表格：

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我仍然无法正确插入标题行。代码如下：

\documentclass[10pt,conference]{IEEEtran}
\begin{document}

\begin{table}
\caption{Time taken for full encryption/decryption using different crypto algorithms}
\centering
\begin{tabular}{|*{7}{c|}}
\hline
\textbf{CPU}  & \multicolumn{3}{c}{\textbf{Encryption}} & \multicolumn{3}{|c|}{\textbf{Decryption}}
\\\textbf{Time}
& \multicolumn{3}{c}{} &\multicolumn{3}{|c|}{}
\\\textbf{(seconds)}
& \textbf{\textit{TLS}} & \textbf{\textit{CTR}} & \textbf{\textit{CBC}} & \textbf{\textit{TLS}} & \textbf{\textit{CTR}} & \textbf{\textit{CBC}}\\ \hline
Minimum & 2.2612 & 1.4145 & 2.0110 & 2.1037 & 1.4267 & 1.4002\\ \hline
Maximum & 3.0849 & 1.4156 & 2.0232 & 2.7585 & 1.4339 & 1.4059\\ \hline
Average & 2.6684 & 1.4150 & 2.0154 & 2.4186 & 1.4324 & 1.4026\\ \hline
\end{tabular}
\end{table}

\end{document}

这将生成下表：

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你能告诉我如何插入那条缺失的行吗？

答案1

<a>要插入跨列的行<b>，可以使用\cline{<a>-<b>}。我建议使用booktabs尽管：

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在此处输入图片描述

\documentclass[10pt,conference]{IEEEtran}

\usepackage{booktabs}

\begin{document}

\begin{table}
  \caption{Time taken for full encryption/decryption using different crypto algorithms}
  \centering
  \begin{tabular}{|*{7}{c|}}
    \hline
    \textbf{CPU}  & \multicolumn{3}{c}{} & \multicolumn{3}{|c|}{} \\
    \textbf{Time} & \multicolumn{3}{c}{\textbf{Encryption}} &\multicolumn{3}{|c|}{\textbf{Decryption}} \\
    \cline{2-7}
    \textbf{(seconds)} & \textbf{\textit{TLS}} & \textbf{\textit{CTR}} & \textbf{\textit{CBC}} & \textbf{\textit{TLS}} & \textbf{\textit{CTR}} & \textbf{\textit{CBC}} \\
    \hline
    Minimum & 2.2612 & 1.4145 & 2.0110 & 2.1037 & 1.4267 & 1.4002 \\
    \hline
    Maximum & 3.0849 & 1.4156 & 2.0232 & 2.7585 & 1.4339 & 1.4059 \\
    \hline
    Average & 2.6684 & 1.4150 & 2.0154 & 2.4186 & 1.4324 & 1.4026 \\
    \hline
  \end{tabular}
\end{table}

\begin{table}
  \caption{Time taken for full encryption/decryption using different crypto algorithms}
  \centering
  \begin{tabular}{ *{7}{c} }
    \toprule
    & \multicolumn{3}{c}{\textbf{Encryption}} &\multicolumn{3}{c}{\textbf{Decryption}} \\
    \cmidrule(lr){2-4}\cmidrule(lr){5-7}
    \raisebox{\dimexpr1.25\normalbaselineskip-.5\height}[0pt][0pt]{\begin{tabular}{@{}c@{}}
      \textbf{CPU time} \\ \textbf{(seconds)}
    \end{tabular}} & \textbf{\textit{TLS}} & \textbf{\textit{CTR}} & \textbf{\textit{CBC}} & \textbf{\textit{TLS}} & \textbf{\textit{CTR}} & \textbf{\textit{CBC}} \\
    \midrule
    Minimum & 2.2612 & 1.4145 & 2.0110 & 2.1037 & 1.4267 & 1.4002 \\
    Maximum & 3.0849 & 1.4156 & 2.0232 & 2.7585 & 1.4339 & 1.4059 \\
    Average & 2.6684 & 1.4150 & 2.0154 & 2.4186 & 1.4324 & 1.4026 \\
    \bottomrule
  \end{tabular}
\end{table}

\end{document}

答案2

这是@Werner 的第二个解决方案的补充方法。我建议您摆脱不必要的（和边缘粗俗的）大胆的和斜体在标题单元格中。如果标题结构良好，则根本不需要使用粗体和斜体。另外，为了确保表格自动跨越整个列宽，您可能需要使用环境tabular*而不是环境tabular。

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\documentclass[10pt,conference]{IEEEtran}
\usepackage{booktabs}
\begin{document}

\begin{table}
\setlength\tabcolsep{0pt} % let tabular* figure out intercolumn whitespace
\caption{CPU time taken for full encryption/decryption using different crypto algorithms}
\begin{tabular*}{\columnwidth}{@{\extracolsep{\fill}}l*{6}{c}}
\toprule
CPU Time  & \multicolumn{3}{c}{Encryption} & \multicolumn{3}{c}{Decryption}\\
\cmidrule{2-4} \cmidrule{5-7}
(seconds)
& TLS & CTR & CBC & TLS & CTR & CBC\\ 
\midrule
Minimum & 2.2612 & 1.4145 & 2.0110 & 2.1037 & 1.4267 & 1.4002\\ 
Maximum & 3.0849 & 1.4156 & 2.0232 & 2.7585 & 1.4339 & 1.4059\\ 
Average & 2.6684 & 1.4150 & 2.0154 & 2.4186 & 1.4324 & 1.4026\\ 
\bottomrule
\end{tabular*}
\end{table}

\end{document}

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