How to draw double lines only for some of the table cells

linerulestables

There is a related question: How can I draw a horizontal line spanning only some of the table cells?, and I would like to do it for double lines.

How can I fix my code to draw double lines only for some of the table cells?

Issue

There is a command to set a single line, which is \cline{2-3}, and \hline \hline works to draw double lines for entire table.

It cannot work for set the interval for \hline{2-3}, and \hline \hline cannot set a specific interval.

Code

\begin{tabular}{|c|cc|}\hline
\multirow{4}{*}{Foo} & 1 & 2 \\
    & 1 & 2 \\\hline{2-3}\hline{2-3}
    & 1 & 2 \\
    & 1 & 2 \\\hline
\multirow{4}{*}{Bar} & 1 & 2 \\
    & 1 & 2 \\\cline{2-3}
    & 1 & 2 \\
    & 1 & 2 \\\hline
\end{tabular}

Best Answer

\documentclass{standalone}
\usepackage{nicematrix}

\usepackage{multirow}


\begin{document}
    \begin{NiceTabular}{|c|cc|}
        

        \Block{4-1}     {Foo}   & 1 & 2 \\
                                & 1 & 2 \\ \Hline\Hline
                                & 1 & 2 \\
                                & 1 & 2 \\  \Hline
        \multirow{4}{*}{Bar}    & 1 & 2 \\
                                & 1 & 2 \\  \cline{2-3}
                                & 1 & 2 \\
                                & 1 & 2\\   \hline

\end{NiceTabular}

\end{document}

Related Solutions

[Tex/LaTex] How to draw a horizontal line spanning only some of the table cells

Instead of nested tables as xport_is_sleeping suggested, you can also use \cline{2-3} which draws a partial line starting on column 2 and ending on column 3 and use \multirow to center the words Foo and Bar on the lines if that's what you want:

alt text

\documentclass{article}
\usepackage{array,multirow}
\begin{document}
\begin{tabular}{|c|cc|}\hline
\multirow{4}{*}{Foo} & 1 & 2 \\
    & 1 & 2 \\\cline{2-3}
    & 1 & 2 \\
    & 1 & 2 \\\hline
\multirow{4}{*}{Bar} & 1 & 2 \\
    & 1 & 2 \\\cline{2-3}
    & 1 & 2 \\
    & 1 & 2 \\\hline
\end{tabular}
\end{document}

When making tables, you should also always use the array package which offers various additional features and improvements (most notably at the vertical and horizontal lines joins).

[Tex/LaTex] \hhline adds white line where no line is intended

You are specifying a final hhline fragment

\hhline{*{2}{|~}*{3}{|-}|~|}

You need

 \hhline{*{2}{|~}*{3}{|-}|~}

The "white line" is not a rule drawn over the black background it is just a lack of background, thus you need to fill it, the easiest way, as shown in the previous question is not to use ~ in the \hhline (which does exactly what you ask and does not draw any line at all) but instead use - but colour the rule using >{...} to match the cell colour.