Vertical centering multirow and row coloring in a table

Question

I am having issues working with multirow in my table, I cannot figure out how to center a vertical row and how to color all the cells related to it.

I am trying to create this table:

This is the code that I am using to create the table above:

\usepackage{adjustbox}
\usepackage{multirow}
\usepackage[table, x11names]{xcolor}
\usepackage{array}

\newcolumntype{M}[1]{>{\raggedright\arraybackslash}m{#1}}

\begin{table}
\caption{Just a nice table}
\begin{center}
\renewcommand{\arraystretch}{5.5}
\begin{tabular}{|c|M{2.0cm}|M{2.0cm}|M{2.0cm}|M{2.0cm}|M{2.0cm}|M{2.0cm}|}
\hline
\multicolumn{2}{|M{2.0cm}|}{name A} & name B & name C & name D & name E & name F\\
\hline
\multirow{2}{*}{\parbox[t]{2mm}{\rotatebox[origin=c]{90}{Classification A1}}} & B & C & D & E & F & G\\
\cline{2-7}
& B & C & D & E & F & G\\
\cline{2-7}
& B & C & D & E & F & G\\
\hline
\multirow{2}{*}{\parbox[t]{2mm}{\rotatebox[origin=c]{90}{Classification A2}}}\cellcolor{blue!25} & B & C & D & E & F & G\\
\cline{2-7}
& B & C & D & E & F & G\\
\hline
\end{tabular}
\end{center}
\label{tab:multicol}
\end{table}

Probably I am messing it up using \arraystretch regarding the centering problem, but I need to use it because the "Classification" name would go out of the table. Is there a different way to handle it?

The color problem I don't know if there is a function to deal with multiple rows without painting over the written part.

Another problem when I use the multirow is that a white or "ghost" row appears between the colored rows. As you can see below:

Any help would be very welcome.

Answer 1

1. The first \multirow should cover 3 rows instead of 2.
2. You must color both cells that the second \multirow covers. But then you should put the \multirowin the last row with a negative count to prevent the color overwriting the text (see themultirow` documentation).
3. You might also have a look at the tabular package which is more powerful for complicated tables (although I wouldn't classify this one as complicated).

\documentclass{article}
\usepackage{adjustbox}
\usepackage{multirow}
\usepackage[table, x11names]{xcolor}
\usepackage{array}

\newcolumntype{M}[1]{>{\raggedright\arraybackslash}m{#1}}
\begin{document}

\begin{table}
\caption{Just a nice table}
\begin{center}
\renewcommand{\arraystretch}{5.5}
\begin{tabular}{|c|M{2.0cm}|M{2.0cm}|M{2.0cm}|M{2.0cm}|M{2.0cm}|M{2.0cm}|}
\hline
\multicolumn{2}{|M{2.0cm}|}{name A} & name B & name C & name D & name E & name F\\
\hline
\multirow{3}{*}{\parbox[t]{2mm}{\rotatebox[origin=c]{90}{Classification A1}}} & B & C & D & E & F & G\\
\cline{2-7}
& B & C & D & E & F & G\\
\cline{2-7}
& B & C & D & E & F & G\\
\hline
\cellcolor{blue!25} & B & C & D & E & F & G\\
\cline{2-7}
\multirow{-2}{*}{\parbox[t]{2mm}{\rotatebox[origin=c]{90}{Classification A2}}}\cellcolor{blue!25}& B & C & D & E & F & G\\
\hline
\end{tabular}
\end{center}
\label{tab:multicol}
\end{table}

\end{document}

Answer 2

The first argument of \multirow is for standard (one-lined) rows, so you have to determine, by trial & error the number of equivalent standard rows. Note this number is not necessarily an integer.

For the coloured \multirow, you have to use \cellcolor{…} also in the empty cells covered by the multirow.

Ol also simplified a bit your code; using \parbox is not necessary for the rotated boxes.

\documentclass{article}
\usepackage{geometry}
\usepackage{adjustbox}
\usepackage{multirow}
\usepackage[table, x11names]{xcolor}
\usepackage{array}

\newcolumntype{M}[1]{>{\raggedright\arraybackslash}m{#1}}

\begin{document}

\begin{table}
\caption{Just a nice table}
\begin{center}
\renewcommand{\arraystretch}{5.5}
\begin{tabular}{|c|M{2.0cm}|M{2.0cm}|M{2.0cm}|M{2.0cm}|M{2.0cm}|M{2.0cm}|}
\hline
\multicolumn{2}{|M{2.0cm}|}{name A} & name B & name C & name D & name E & name F\\
\hline
\multirow{3.1}{*}{\rotatebox[origin=c]{90}{Classification A1}} & B & C & D & E & F & G\\
\cline{2-7}
& B & C & D & E & F & G\\
\cline{2-7}
& B & C & D & E & F & G\\
\hline
\cellcolor{blue!25}& B & C & D & E & F & G\\
\cline{2-7}
\multirow{-2}{*}{\cellcolor{blue!25} \rotatebox[origin=c]{90}{Classification A2}}& B & C & D & E & F & G\\
\hline
\end{tabular}
\end{center}
\label{tab:multicol}
\end{table}

\end{document}