Text Formatting ⇒ Vertical Centering in tabularx

[Timothée]

I have seen many topics on this subject, but it doesn't work with me.

I have a table, and I want to vertical align all the columns.

Consider this code:

Code: Select all

\begin{table}[h]
\centering
\sffamily \begin{tabularx}{\linewidth}{|X|c|c|c|c|c|c|X|}
  \hline
    \multicolumn{2}{|c|}{Topologie} & \#c & Motif & $v \in V$ obligatoire & $D$ & $\Delta$ & Complexité  \\
    \hline
   $G$ & $H$ & \multirow{2}{*}{$2$} & \multirow{2}{*}{$=$} & \multirow{2}{*}{$\varnothing$} & \multirow{2}{*}{$\{1, qlc \}$} & \multirow{2}{*}{qlc} & \multirow{2}{*}{Inapprox} \\
  \cline{1-2} 
  Graphe complet, intervalles propres, split-graph, étoile, $2$-coloration valide, graphe-bloc, arbre & qlc &  &  &   &  &  &  \\
  \hline
\end{tabularx} \normalfont
\caption{Synthèse des conditions étudiées.}
\label{tab:Appr}
\end{table}

As is, this produces:

TAB1.png (17.68 KiB) Viewed 28462 times

But I want something like this :

TAB2.png (21.05 KiB) Viewed 28462 times

So, how can I have a column verticaly align ?

[rais]

Well, you'll have to redefine the X column to be based on a m-column instead of a p-column, see \tabularxcolumn in tabularx' documentation.
Then you have to take into account, that the number of lines is increased by the number of line breaks introduced by the contents of these X columns. As such, 2 is not enough for your \multirow commands.
Or you rearrange the table a bit, no longer needing the \multirows alltogether:

Code: Select all

\documentclass[a4paper]{report}
\usepackage[T1]{fontenc}
\usepackage[french]{babel}
\usepackage[left=2cm,right=4cm]{geometry}
\usepackage{amssymb}
\usepackage{tabularx}
\renewcommand\tabularxcolumn[1]{m{#1}}
\begin{document}
\begin{table}[ht]
\centering\sffamily
\begin{tabularx}{\linewidth}{|@{}c@{}|c|c|c|c|c|X|}
  \hline
    Topologie & \#c & Motif & $v \in V$ obligatoire & $D$ & $\Delta$ & Complexité  \\
    \hline
    {\begin{tabularx}{4cm}{X|c}
    $G$ & $H$\\
    \hline
    Graphe complet, intervalles propres, split-graph, étoile, $2$-coloration valide, graphe-bloc, arbre & qlc\\
     \end{tabularx}} &
   $2$ & $=$ &$\varnothing$ & $\{1, qlc \}$ & qlc & Inapprox\\
  \hline
\end{tabularx}\normalfont
\caption{Synthèse des conditions étudiées.}
\label{tab:Appr}
\end{table}
\end{document}

Happy Easter;-)
Rainer

[iakl]

I honestly can't figure out how Latex stays alive if it makes things as simple and basic as centering a cell so difficult. It blows my mind. I have been working in latex for a couple of months now and for every basic task I have to do, latex has taken it upon itself to do it like climbing Everest. Yes, I have learned a lot. I can do a lot of things now, but I only want to finish this document and look for alternatives, because I would not support another Latex document.