Draw border for just one cell in a table

Question

How can I draw border for just one cell in a simple table?

\documentclass{article}
\usepackage{placeins}
\usepackage{booktabs ,float}
\begin{document}

\begin{table}[htbp]
    \centering
    \caption{Test Set }
    \begin{tabular}{cccc}
        \hline\hline

        \multicolumn{2}{c}{\textbf{Train}}&  \multicolumn{2}{c}{\textbf{Test}}\\
        \cmidrule(r){1-2} \cmidrule(r){3-4} 
        \textbf{A}  & \textbf{\# D} & \textbf{\# E} & \textbf{\# E} \\
        \hline
        B & 9.6 & 62.8& 62.8 \\
        C & 12.0 & 78.9 & 62.8 \\
        C & 12.0 & 78.9 & 62.8 \\           
        \hline
    \end{tabular}       
\end{table} 
\end{document}

Zarko · Answer 1 · 2017-10-13T22:38:28.043

2

\documentclass{article}
\usepackage{placeins}
\usepackage{booktabs ,float}

\begin{document}
\begin{table}[htbp]
    \centering
\renewcommand\arraystretch{1.2}
    \caption{Test Set }
    \begin{tabular}{cccc}
        \hline\hline

        \multicolumn{2}{c}{\textbf{Train}}&  \multicolumn{2}{c}{\textbf{Test}}\\
        \cmidrule(r){1-2} \cmidrule(r){3-4}
        \textbf{A}  & \textbf{\# D} & \textbf{\# E} & \textbf{\# E} \\
        \hline
        B & 9.6 & 62.8& 62.8 \\
        C & 12.0 & \fbox{78.9} & 62.8 \\
        C & 12.0 & 78.9 & 62.8 \\
        \hline
    \end{tabular}
\end{table}
\end{document}

i would use rules from booktabs for all horizontal rules in table not just one ...

edited Oct 13 '17 at 22:38

answered Oct 13 '17 at 17:51

Zarko

296,517

You might increase \arraystretch (macro, not length). I believe the default for tabular is 1. – John Kormylo Oct 13 '17 at 22:16
@JohnKormylo, you have right. i will add \renewcommand\arraystretch{1.2} . tank you very much for point. – Zarko Oct 13 '17 at 22:39

score 1 · Answer 2 · answered Oct 13 '17 at 18:31

You can box the content with \fbox. To ensure vertical alignment doesn't change

\documentclass{article}

\usepackage{booktabs,siunitx}

\newcommand{\boxnum}[2][table-format=2.1]{\smash{\fbox{\vphantom{#2}\tablenum[#1]{#2}}}}

\begin{document}

\begin{tabular}{ c *{3}{S[table-format=2.1]} }
  \toprule
  \multicolumn{2}{c}{\textbf{Train}} & \multicolumn{2}{c}{\textbf{Test}} \\
  \cmidrule(r){1-2} \cmidrule(l){3-4}
  {\textbf{A}} & {\textbf{\# D}} & {\textbf{\# E}} & {\textbf{\# E}} \\
  \midrule
  B & \multicolumn{1}{c}{\boxnum{9.6}} & 62.8 & 62.8  \\
  C & 12.0 & 78.9 & \multicolumn{1}{c}{\boxnum{62.8}} \\
  C & 12.0 & \multicolumn{1}{c}{\boxnum{78.9}} & 62.8 \\
  \bottomrule
\end{tabular}

\end{document}

You can also use tabular rules to frame an element:

\documentclass{article}

\usepackage{booktabs,siunitx}

\begin{document}

\begin{tabular}{ c *{3}{S[table-format=2.1]} }
  \toprule
  \multicolumn{2}{c}{\textbf{Train}} & \multicolumn{2}{c}{\textbf{Test}} \\
  \cmidrule(r){1-2} \cmidrule(l){3-4}
  {\textbf{A}} & {\textbf{\# D}} & {\textbf{\# E}} & {\textbf{\# E}} \\
  \midrule
  \cline{2-2}
  B & \multicolumn{1}{|c|}{\tablenum[table-format=2.1]{9.6}} & 62.8 & 62.8  \\
  \cline{2-2}
  C & 12.0 & 78.9 & 62.8 \\
  \cline{4-4}
  C & 12.0 & 78.9 & \multicolumn{1}{|c|}{62.8} \\
  \cline{4-4}
  \bottomrule
\end{tabular}

\end{document}

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Draw border for just one cell in a table

2 Answers2