# customize tabular

i want to customize my table using the tabular environments, i write :

\begin{tabular}{|l|c|r|}
\hline
colonne 1 & colonne 2 & colonne 3 \\
\hline
1.1 & 1.2 & 1.3 \\
\hline
2.1 & 2.2 & 2.3 \\
\hline
\end{tabular}


i want to delete some line , something like the picture below

-

You can achieve what you want using a combination of \cline and \multicolumn as demonstrated below

\documentclass{article}

\begin{document}

\begin{tabular}{|l|c|r|}
\cline{2-3}
\multicolumn{1}{l|}{colonne 1} & colonne 2 & colonne 3 \\
\hline
1.1 & 1.2 & 1.3 \\
\hline
2.1 & 2.2 & 2.3 \\
\hline
\end{tabular}

\end{document}


As a side note, have a look at the booktabs documentation for reasons not to use vertical rules in table.

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+1 with the stress on the booktabs package` –  tohecz Jul 9 '12 at 5:54