General ⇒ Incompatibility between delarray and arydshln?

[tristof]

Hello everybody,
I'm trying to create a tabular using packages array and arydshln (in order to use dashed line between lines and columns):

Code: Select all

Code, edit and compile here:

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\documentclass[american,12pt,fleqn,a4paper]{report}
\NeedsTeXFormat{LaTeX2e}
\usepackage{t1enc}
\usepackage[latin1]{inputenc}
\usepackage[american]{babel}
\usepackage{amsmath,amsthm,amssymb}
\usepackage{array}
\usepackage{delarray}
\usepackage{arydshln}
\begin{document}
    \begin{equation}
        \left(
            \begin{array}{c;{2.5pt/1.2pt}c}
                A & B  \\  \hdashline[2.5pt/1.2pt]
                C & D
            \end{array}
        \right)
    \end{equation}
\end{document}
 
 
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Run LaTeX here

In order to simplify the use of the delimitters [\left( and \right) around the tabular], I decided to use the package delarray. In that case, it doesn't work anymore:

Code: Select all

Code, edit and compile here:

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    \begin{equation}
        \begin{array}({c;{2.5pt/1.2pt}c})
            A & B  \\  \hdashline[2.5pt/1.2pt]
            C & D
        \end{array}
    \end{equation}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Run LaTeX here

On the other hand, if I use only the package delarray and not arydshln, everything works fine:

Code: Select all

Code, edit and compile here:

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    \begin{equation}
        \begin{array}({c|c})
            A & B  \\  \hline
            C & D
        \end{array}
    \end{equation}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Run LaTeX here

I did a Google search, and looked also in the documentations of both packages but they don't say they are incompatible. I also tried to modify the order of the declaration of the packages, but without any success. Does anybody have a suggestion, besides not using delarray?

Thanks a lot,
Christophe

[Stefan Kottwitz]

Hi Christophe,

it seems those packages do not work together. Both packages redefine internal commands of the array package, each in a different way. Perhaps delarray could be modified more simply than arydshln because delarray contains about 20 lines of code, arydshln a lot more. Or define a new environment similar to delarray using arydshln with delimiters.

Stefan

[tristof]

Thank you for your reply I'll try to look into the code of delarray to see if I can figure out a way to adapt it.

Christophe