[Tex/LaTex] How to merge cells correctlly

tables

I have a table and need to merge two cells in one.

My code is below:

\begin{document}
\begin{table}[]
\centering \caption {caption}
\label{tab:boot-var}
\begin{tabular}{|c|r|r|r|r|r|r|r|r|r|r|r|r|} \hline
%
\multirow{2}{*}{$\alpha$} &
\multicolumn{3}{c|}{$\overline{\emph{VaR}}_\alpha \times 10^{-2}$}
& \multicolumn{3}{c|}{$\Delta \times 10^{-3}$} &
\multicolumn{3}{c|}{$SD \times 10^{-2}$} &
\multicolumn{3}{c|}{$RMSE \times 10^{-2}$} \\ \cline{2-13}
 & \multicolumn{1}{c|}{$C_G$} & \multicolumn{1}{c|}{$C_t$} & \multicolumn{1}{c|}{$C_R$} & \multicolumn{1}{c|}{$C_G$} & \multicolumn{1}{c|}{$C_t$} & \multicolumn{1}{c|}{$C_R$} & \multicolumn{1}{c|}{$C_G$} & \multicolumn{1}{c|}{$C_t$} & \multicolumn{1}{c|}{$C_R$} & \multicolumn{1}{c|}{$C_G$} & \multicolumn{1}{c|}{$C_t$} & \multicolumn{1}{c|}{$C_R$} \\ \hline
90,0 & 1,61 & 1,62 & 1,61 & 2,99 &  3,03 &  2,96 & 0,80 & 0,79 & 0,85 & 3,10 & 3,13 & 3,08 \\
95,0 & 2,19 & 2,20 & 2,18 & 5,00 &  5,06 &  4,93 & 1,18 & 1,37 & 1,48 & 5,14 & 5,24 & 5,14 \\
99,0 & 3,46 & 3,50 & 3,46 & 8,71 &  9,11 &  8,78 & 1,79 & 2,32 & 2,47 & 8,89 & 9,40 & 9,11 \\
99,5 & 4,04 & 4,21 & 4,09 & 4,15 &  5,82 &  4,64 & 4,22 & 6,10 & 5,69 & 5,91 & 8,42 & 7,33 \\
99,9 & 5,62 & 5,53 & 5,49 & 0,05 & -0,86 & -1,21 & 3,81 & 5,18 & 5,16 & 3,81 & 5,24 & 5,29 \\ \hline
\end{tabular}
\end{table}
\end{document}

Question. How to merge cells in the table correctlly?

My problem is \multirow{2}{*}{$\alpha$}

Best Answer

While your problem could be solved by loading multirow (you got an error message, didn't you?), there are also some smaller issues which are fixed in the following code: \emph in math mode is wrong and \mathit should be used.

I didn't fix the minus signs (you should) because I also present a better way to lay out the table that doesn't suffer from the problem.

\documentclass{article}
\usepackage{geometry}
\usepackage{multirow} % for your style
\usepackage{booktabs,siunitx} % for the better one

\sisetup{output-decimal-marker={,}}

\begin{document}

\begin{table}[htp]
\centering
\caption{Caption for the jailed table}
\label{tab:boot-var}
\begin{tabular}{|c|r|r|r|r|r|r|r|r|r|r|r|r|} \hline
%
\multirow{2}{*}{$\alpha$} &
\multicolumn{3}{c|}{$\overline{\mathit{Va}R}_\alpha \times 10^{-2}$}&
  \multicolumn{3}{c|}{$\Delta \times 10^{-3}$} &
  \multicolumn{3}{c|}{$\mathit{SD} \times 10^{-2}$} &
  \multicolumn{3}{c|}{$\mathit{RMSE} \times 10^{-2}$} \\
\cline{2-13}
&
  \multicolumn{1}{c|}{$C_G$} &
  \multicolumn{1}{c|}{$C_t$} &
  \multicolumn{1}{c|}{$C_R$} &
  \multicolumn{1}{c|}{$C_G$} &
  \multicolumn{1}{c|}{$C_t$} &
  \multicolumn{1}{c|}{$C_R$} &
  \multicolumn{1}{c|}{$C_G$} &
  \multicolumn{1}{c|}{$C_t$} &
  \multicolumn{1}{c|}{$C_R$} &
  \multicolumn{1}{c|}{$C_G$} &
  \multicolumn{1}{c|}{$C_t$} &
  \multicolumn{1}{c|}{$C_R$} \\
\hline
90,0 & 1,61 & 1,62 & 1,61 & 2,99 &  3,03 &  2,96 & 0,80 & 0,79 & 0,85 & 3,10 & 3,13 & 3,08 \\
95,0 & 2,19 & 2,20 & 2,18 & 5,00 &  5,06 &  4,93 & 1,18 & 1,37 & 1,48 & 5,14 & 5,24 & 5,14 \\
99,0 & 3,46 & 3,50 & 3,46 & 8,71 &  9,11 &  8,78 & 1,79 & 2,32 & 2,47 & 8,89 & 9,40 & 9,11 \\
99,5 & 4,04 & 4,21 & 4,09 & 4,15 &  5,82 &  4,64 & 4,22 & 6,10 & 5,69 & 5,91 & 8,42 & 7,33 \\
99,9 & 5,62 & 5,53 & 5,49 & 0,05 & -0,86 & -1,21 & 3,81 & 5,18 & 5,16 & 3,81 & 5,24 & 5,29 \\ \hline
\end{tabular}
\end{table}

\begin{table}[htp]
\centering
\caption{Caption for the nice table}
\label{tab:boot-var+}
\begin{tabular}{
 @{}
 S[table-format=2.1]
 *{4}{S[table-format=1.2]}
 *{2}{S[table-format=-1.2]}
 *{6}{S[table-format=1.2]}
 @{}
}
\toprule
{$\alpha$} &
  \multicolumn{3}{c}{$\overline{\mathit{Va}R}_\alpha \times 10^{-2}$} &
  \multicolumn{3}{c}{$\Delta \times 10^{-3}$} &
  \multicolumn{3}{c}{$\mathit{SD} \times 10^{-2}$} &
  \multicolumn{3}{c}{$\mathit{RMSE} \times 10^{-2}$} \\
\cmidrule(lr){2-4} \cmidrule(lr){5-7} \cmidrule(lr){8-10} \cmidrule(l){11-13}
&
  {$C_G$} & {$C_t$} & {$C_R$} &
  {$C_G$} & {$C_t$} & {$C_R$} &
  {$C_G$} & {$C_t$} & {$C_R$} &
  {$C_G$} & {$C_t$} & {$C_R$} \\
\midrule
90,0 & 1,61 & 1,62 & 1,61 & 2,99 &  3,03 &  2,96 & 0,80 & 0,79 & 0,85 & 3,10 & 3,13 & 3,08 \\
95,0 & 2,19 & 2,20 & 2,18 & 5,00 &  5,06 &  4,93 & 1,18 & 1,37 & 1,48 & 5,14 & 5,24 & 5,14 \\
99,0 & 3,46 & 3,50 & 3,46 & 8,71 &  9,11 &  8,78 & 1,79 & 2,32 & 2,47 & 8,89 & 9,40 & 9,11 \\
99,5 & 4,04 & 4,21 & 4,09 & 4,15 &  5,82 &  4,64 & 4,22 & 6,10 & 5,69 & 5,91 & 8,42 & 7,33 \\
99,9 & 5,62 & 5,53 & 5,49 & 0,05 & -0,86 & -1,21 & 3,81 & 5,18 & 5,16 & 3,81 & 5,24 & 5,29 \\
\bottomrule
\end{tabular}
\end{table}

\end{document}

As you see, the input is much easier and the table has a more professional look.

Don't jail table cells, says the duck.

Related Solutions

[Tex/LaTex] How to get multiple multirows in a table

I believe your problem is that you didn't put enough empty cells for the following lines. A multirow will allow content to occupy space, but doesn't actually create the cells that are under it. I rewrote your code aligning everything to illustrate that.

\begin{tabular}{l r | l || r r}
Vzorka & Výskyty & Algoritmus & Porovnania & Prístupy \\ \hline 
\multirow{5}{*}{Gabriel} & \multirow{5}{*}{8} & NAIVE BINARY          & 158   & 44 \\
                         &                    & NAIVE BINARY_LCP      & 174   & 92 \\
                         &                    & NAIVE INTERPOLATION   & 168   & 78 \\
                         &                    & LESS NAIVE BINARY     & 98    & 26 \\
                         &                    & LESS NAIVE BINARY_LCP & 124   & 58 \\ \hline
\end{tabular}

[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.

Best Answer

Related Solutions

[Tex/LaTex] How to get multiple multirows in a table

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

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