# Colored cell removes line

I have a problem with coloring a cell in a table because it removes the upper line of the cell. I already found out that there are some issues with \cellcolor and \cline but I couldn't come up with a solution that works with \multicolumn.

\documentclass{article}
\usepackage{amsmath}
\usepackage{multirow}
\usepackage{multicol}
\usepackage{rotating}
\usepackage[table]{xcolor}
\usepackage{siunitx}

\begin{document}
\begin{tabular}{|c|c|c|c|c|c|}
\cline{3-6}
\multicolumn{2}{c|}{} & \multicolumn{4}{c|}{Anzahl der Nullstellen} \\
\cline{3-6}
\multicolumn{2}{c|}{} & 0 & 1 & 2 & 3 \\
\hline
\multirow{18}{*}{\rotatebox[origin=c]{90}{Anzahl der Polstellen}} & 1 & $\begin{matrix} \SI{99.9}{\percent} \\ \SI{37.7}{\percent} \\ \SI{43.8}{\percent} \\ \SI{45.1}{\percent}\end{matrix}$ & $\begin{matrix} \SI{99.9}{\percent} \\ \SI{41.5}{\percent} \\ \SI{67.5}{\percent} \\ \SI{72.6}{\percent}\end{matrix}$ & \multicolumn{2}{c|}{} \\
\cline{2-5}
& 2 & $\begin{matrix} \SI{99.9}{\percent} \\ \SI{72}{\percent} \\ \SI{78.4}{\percent} \\ \SI{77.8}{\percent}\end{matrix}$ & $\begin{matrix} \SI{99.9}{\percent} \\ \SI{72.6}{\percent} \\ \SI{92.5}{\percent} \\ \SI{94.4}{\percent}\end{matrix}$ & $\begin{matrix} \SI{99.5}{\percent} \\ \SI{72.7}{\percent} \\ \SI{97.2}{\percent} \\ \SI{98.3}{\percent}\end{matrix}$ &  \\
\cline{2-6}
& 3 & $\begin{matrix} \SI{98.6}{\percent} \\ \SI{-42.7}{\percent} \\ \SI{95.7}{\percent} \\ \SI{94.2}{\percent}\end{matrix}$ & {\cellcolor{black!25}} $\begin{matrix} \SI{99.9}{\percent} \\ \SI{73.4}{\percent} \\ \SI{99.1}{\percent} \\ \SI{99.3}{\percent}\end{matrix}$ & $\begin{matrix} \SI{99.9}{\percent} \\ \SI{-40.1}{\percent} \\ \SI{99.3}{\percent} \\ \SI{96.7}{\percent}\end{matrix}$ & $\begin{matrix} \SI{99.7}{\percent} \\ \SI{72.8}{\percent} \\ \SI{99.4}{\percent} \\ \SI{98}{\percent}\end{matrix}$ \\
\cline{2-6}
& 4 & $\begin{matrix} \SI{0}{\percent} \\ \SI{67.8}{\percent} \\ \SI{93.2}{\percent} \\ \SI{93}{\percent}\end{matrix}$ & $\begin{matrix} \SI{99.5}{\percent} \\ \SI{-23.5}{\percent} \\ \SI{95.4}{\percent} \\ \SI{93}{\percent}\end{matrix}$ & $\begin{matrix} \SI{99.9}{\percent} \\ \SI{73.9}{\percent} \\ \SI{5.3}{\percent} \\ \SI{93}{\percent}\end{matrix}$ & $\begin{matrix} \SI{99.9}{\percent} \\ \SI{74}{\percent} \\ \SI{-87.1}{\percent} \\ \SI{96.5}{\percent}\end{matrix}$ \\
\cline{2-6}
& 5 & $\begin{matrix} \SI{-99.7}{\percent} \\ \SI{-82.9}{\percent} \\ \SI{-99.4}{\percent} \\ \SI{93}{\percent}\end{matrix}$ & $\begin{matrix} \SI{-99.8}{\percent} \\ \SI{64.9}{\percent} \\ \SI{2.7}{\percent} \\ \SI{93}{\percent}\end{matrix}$ & $\begin{matrix} \SI{-100.5}{\percent} \\ \SI{-69.8}{\percent} \\ \SI{59.1}{\percent} \\ \SI{93}{\percent}\end{matrix}$ & $\begin{matrix} \SI{-0.4}{\percent} \\ \SI{73.9}{\percent} \\ \SI{14.4}{\percent} \\ \SI{93.1}{\percent}\end{matrix}$ \\
\hline
\end{tabular}
\end{document}


Btw can somebody tell me why I had to put 18 in \multirow?

• Using \hhline as usually recommended in connection with \cellcolor should also work in your case. (\hhline{|~|-|-|-|-|-|}) – leandriis Mar 8 at 20:55
• Thank you, this worked for me. I tried it already before but did something wrong. – Kaniee Mar 8 at 21:08

As @leandris has kindly suggested in a comment, to make sure that the horizontal line shows up fully, it suffices to (a) load the hhline package and (b) replace the \cline{3-6} directive in question with \hhline{~~----}.

In addition, you may want to simplify your code considerably. For instance, by employing an array environment instead of a tabular environment, you can get rid of all \$ symbols. There's no real discernible need for encasing the percentage numbers in \SI{...}{...} wrappers.

(The "missing" vertical line to the left of the shaded cell is an artifact of the low resolution of the screenshot; in a normal pdf file it'll show up just fine.)

\documentclass{article}
\usepackage{mathtools,hhline}
\usepackage{multirow}
\usepackage{rotating}
\usepackage[table]{xcolor}
\usepackage{siunitx}

\begin{document}
$\setlength\extrarowheight{1pt} \begin{array}{|*{6}{c|}} \cline{3-6} \multicolumn{2}{c|}{} & \multicolumn{4}{c|}{\text{Anzahl der Nullstellen}} \\ \cline{3-6} \multicolumn{2}{c|}{} & 0 & 1 & 2 & 3 \\ \hline \multirow{17}{*}{\rotatebox[origin=c]{90}{Anzahl der Polstellen}} & 1 & \begin{matrix*}[r] \phantom{-}99.9\% \\ 37.7\% \\ 43.8\% \\ 45.1\%\end{matrix*} & \begin{matrix*}[r] \phantom{-}99.9\% \\ 41.5\% \\ 67.5\% \\ 72.6\%\end{matrix*} & \multicolumn{2}{c|}{} \\ \cline{2-5} & 2 & \begin{matrix*}[r] \phantom{-}99.9\% \\ 72.0\% \\ 78.4\% \\ 77.8\%\end{matrix*} & \begin{matrix*}[r] \phantom{-}99.9\% \\ 72.6\% \\ 92.5\% \\ 94.4\%\end{matrix*} & \begin{matrix*}[r] \phantom{-1}99.5\% \\ 72.7\% \\ 97.2\% \\ 98.3\%\end{matrix*} & \\ %\cline{2-6} \hhline{~~----} & 3 & \begin{matrix*}[r] 98.6\% \\ -42.7\% \\ 95.7\% \\ 94.2\%\end{matrix*} & \cellcolor{black!12} \begin{matrix*}[r] \phantom{-}99.9\% \\ 73.4\% \\ 99.1\% \\ 99.3\%\end{matrix*} & \begin{matrix*}[r] \phantom{-1}99.9\% \\ -40.1\% \\ 99.3\% \\ 96.7\%\end{matrix*} & \begin{matrix*}[r] \phantom{-}99.7\% \\ 72.8\% \\ 99.4\% \\ 98\%\end{matrix*} \\ \cline{2-6} & 4 & \begin{matrix*}[r] 0.0\% \\ \phantom{-}67.8\% \\ 93.2\% \\ 93.0\%\end{matrix*} & \begin{matrix*}[r] 99.5\% \\ -23.5\% \\ 95.4\% \\ 93.0\%\end{matrix*} & \begin{matrix*}[r] \phantom{-1}99.9\% \\ 73.9\% \\ 5.3\% \\ 93.0\%\end{matrix*} & \begin{matrix*}[r] 99.9\% \\ 74\% \\ -87.1\% \\ 96.5\%\end{matrix*} \\ \cline{2-6} & 5 & \begin{matrix*}[r] -99.7\% \\ -82.9\% \\ -99.4\% \\ 93.0\%\end{matrix*} & \begin{matrix*}[r] -99.8\% \\ 64.9\% \\ 2.7\% \\ 93.0\%\end{matrix*} & \begin{matrix*}[r] -100.5\% \\ -69.8\% \\ 59.1\% \\ 93.0\%\end{matrix*} & \begin{matrix*}[r] -0.4\% \\ 73.9\% \\ 14.4\% \\ \phantom{-}93.1\%\end{matrix*} \\ \hline \end{array}$
\end{document}

• The problem is still the same with this code. Only the color is darker. – Kaniee Mar 8 at 21:04
• @Sebastiano: Using \hhline will fix the problem. – leandriis Mar 8 at 21:05
• Replace \cline{2-6} by \hhline{|~|-|-|-|-|-|} and load the hline package. – leandriis Mar 8 at 21:11
• I've edited your code to implement @leadris's keen suggestion, and also to streamline some of other code provided by the OP. Feel free to revert. – Mico Mar 8 at 21:18
• @Sebastiano: booktabs does not cooperate very well with vertical lines, so, although I personally use booktabs quite often, this package is most likely not applicable to this specific question. – leandriis Mar 8 at 21:24