[Tex/LaTex] how to add a vertical line in the table

tables

I would like to add vertical lines in my table. Can anybody suggest me the change required in following code to get proper vertical lines in my table? Sample code is pasted below. Screenshot of the output is attached.
Thanks a lot.

 \documentclass[sigconf, authordraft]{acmart}

\usepackage{booktabs}
\usepackage{multirow}
%
\begin{document}
\begin{table*}[!h]
\centering
\caption{Summary of Quantitative Evaluation}                                    
\label{tab:table3}
\begin{tabular}{|p{0.5 cm}|p{0.85 cm}|p{12 cm}|}
%\begin{tabular}{ccc}
\toprule
Sl.No. & Metric & Remark   \\
\midrule
1 & Rel Bias & Smaller relative bias (almost equal to 0) is obtained for all fused bands and for all 7 fusion methods.\\    
\bottomrule
2 & Rel Bias & Smaller relative bias (almost equal to 0) is obtained for all fused bands and for all 7 fusion methods.
\\
 \bottomrule
3& Rel Bias & Smaller relative bias (almost equal to 0) is obtained for all fused bands and for all 7 fusion methods. \\
 \bottomrule
 \end{tabular}
\end{table*}

\end{document}

Best Answer

To obtain intersecting vertical and horizontal lines with booktabs, you have to suppress the padding of booktabs rules. You can replace this padding with a minimal padding at the top and bottom of each cell in columns with specifier prefixed with the letter S, loading the cellspace package. Here is a possible code:

 \documentclass{article}
\usepackage{booktabs}
\usepackage{multirow, tabularx, caption, cellspace}
\setlength{\cellspacetoplimit}{4pt}
\setlength{\cellspacebottomlimit}{4pt}
\addparagraphcolumntypes{X}
%
\begin{document}

\begin{table*}[!h]
\centering
\setlength{\aboverulesep}{0pt}
\setlength{\belowrulesep}{0pt}
\setlength{\tabcolsep}{4pt}
\caption{Summary of Quantitative Evaluation}
\label{tab:table3}
\begin{tabularx}{\linewidth}{|l|l|S{X}|}
\toprule
Sl.No. & Metric & Remark \\
\midrule
1 & Rel Bias & Smaller relative bias (almost equal to 0) is obtained for all fused bands and for all 7 fusion methods.\\
\bottomrule
2 & Rel Bias & Smaller relative bias (almost equal to 0) is obtained for all fused bands and for all 7 fusion methods.
\\
 \bottomrule
3& Rel Bias & Smaller relative bias (almost equal to 0) is obtained for all fused bands and for all 7 fusion methods. \\
 \bottomrule
\end{tabularx}
 \end{table*}

\end{document}

enter image description here

Note 1: If you load siunitx, which defines an S column type, you have to use another prefix; the default is C.

Note 2: Other than booktabs, some packages define horizontal lines with variable thickness: boldline (no paddding, but also defines variable width vertical lines) and makecell (which also lets you define a fixed padding for all cells of a table).

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