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Newsgroups: comp.text.tex
From: David R <angel_ov_no...@tiscali.co.uk>
Date: Thu, 14 Dec 2006

Hi,

\begin{array}[pos]{|*{5}{|c|}}
& & & & & \\
\end{array}

allows me to specify |c| columns 5 times.

My questions is can I repeat the data to go into the columns in the same way? Thus

\begin{array}[pos]{|*{5}{|c|}}
something1 & *{4}{& something2} \\
\end{array}

David R

There are ways, but they are not part of tabular/array. Moreover, it gets very tricky when spanning multiple array cells because of local grouping. Unless this is really important, I suggest relicating the data with your text editor.

Donald Arseneau

\documentclass{article}
\makeatletter
\newcommand\replicate[2]{%
   \ifnum#1>\z@ \expandafter\@firstofone
   \else
     \expandafter\@gobble
   \fi
   {#2\expandafter\replicate\expandafter{\number\numexpr#1-1\relax}{#2}}%
}

\makeatother
\begin{document}
\begin{tabular}{|*{5}{|c|}}
something1 \replicate{4}{& something2} \\
\end{tabular}
\end{document}

Morten Hogholm

> Thankyou very much.  That is outstanding.  I could never have done that
> in a year.  Could this be made into a \usepackage{arrayinnards.sty} so
> that everybody could do this?

Well, it's more of a utility macro which has numerous uses.

The expl3 code http://www.ctan.org/tex-archive/help/Catalogue/entries/expl3.html contains various forms of such macros if you are interested in understanding how they can be constructed.

documented on: 15 Dec 2006, Morten Hogholm

Latex file to create an empty table

\documentclass{article}

\makeatletter
\newcommand\replicate[2]{%
   \ifnum#1>\z@ \expandafter\@firstofone
   \else
     \expandafter\@gobble
   \fi
   {#2\expandafter\replicate\expandafter{\number\numexpr#1-1\relax}{#2}}%
}
\newcommand\RowCnt{5}
\newcommand\ColCnt{5}
\makeatother

\begin{document}
\thispagestyle{empty}  % no page number

\begin{tabular}{|l|\replicate{\RowCnt}{c|}}\hline
something1 \replicate{\RowCnt}{& ~} \\ \hline
something2 \replicate{\RowCnt}{& ~} \\ \hline
\end{tabular}

\end{document}

documented on: 2007.07.02, T