Partitioned AMSMath Matrices

[Randy Yates]

Is a way to partition an amsmath matrix like bmatrix? A
google search turned up an old reference to the pmat package
but it doesn't appear to work with amsmath.
--
% Randy Yates % "...the answer lies within your soul
%% Fuquay-Varina, NC % 'cause no one knows which side
%%% 919-577-9882 % the coin will fall."
%%%% <ya...@ieee.org> % 'Big Wheels', *Out of the Blue*, ELO
http://home.earthlink.net/~yatescr

[Lars Madsen]

Randy Yates wrote:
> Is a way to partition an amsmath matrix like bmatrix? A
> google search turned up an old reference to the pmat package
> but it doesn't appear to work with amsmath.

what is an ams matrix?

could you provide a minimal example?

/daleif

[Randy Yates]

Lars Madsen <dal...@imf.au.dk> writes:

You're kidding, right?

By "ams matrix" I mean any of the amsmath package matrix
extensions to LaTeX, such as pmatrix, bmatrix, etc. For
example,

\documentclass[10pt]{article}
\usepackage{amsmath}

\begin{document}

\begin{align}
\begin{bmatrix}
1 & 0 & 0 \\
0 & 1 & 0 \\
0 & 0 & 1
\end{bmatrix}
\end{align}

\end{document}

By a partition, I mean a way of adding a dashed line between
matrix rows or columns - either a dashed horizontal line between
rows, or a dashed vertical line between columns.
--
% Randy Yates % "Bird, on the wing,
%% Fuquay-Varina, NC % goes floating by
%%% 919-577-9882 % but there's a teardrop in his eye..."
%%%% <ya...@ieee.org> % 'One Summer Dream', *Face The Music*, ELO
http://home.earthlink.net/~yatescr

[Danie]

Use \hdotsfor

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\[
\begin{bmatrix}
a_{11} & a_{12} & \dots & a_{1n}\\
a_{21} & a_{22} & \dots & a_{2n}\\
\hdotsfor[2.0]{4}\\
a_{m1} & a_{m2} & \dots & a_{mn}
\end{bmatrix}
\]
\end{document}

Danie Els (dnjels at sun dot ac dot za)

[Jean-Côme Charpentier]

Randy Yates wrote:
> [...]

> By a partition, I mean a way of adding a dashed line between
> matrix rows or columns - either a dashed horizontal line between
> rows, or a dashed vertical line between columns.

blkarray package?
David Carlisle say that blkarray is "A LaTeX style option extending
array and tabular HIGGHLY VOLATILE, use at your own risk!!!!!!!!". Well,
I have used it at my own risk and I'm still alive :-)

Jean-Côme Charpentier

[Lars Madsen]

Randy Yates wrote:
> Lars Madsen <dal...@imf.au.dk> writes:
>
>
>>Randy Yates wrote:
>>
>>>Is a way to partition an amsmath matrix like bmatrix? A
>>>google search turned up an old reference to the pmat package
>>>but it doesn't appear to work with amsmath.
>>
>>what is an ams matrix?
>>
>>could you provide a minimal example?
>
>
> You're kidding, right?
>

I misunderstod your question

> By "ams matrix" I mean any of the amsmath package matrix
> extensions to LaTeX, such as pmatrix, bmatrix, etc. For
> example,
>
> \documentclass[10pt]{article}
> \usepackage{amsmath}
>
> \begin{document}
>
> \begin{align}
> \begin{bmatrix}
> 1 & 0 & 0 \\
> 0 & 1 & 0 \\
> 0 & 0 & 1
> \end{bmatrix}
> \end{align}
>
> \end{document}
>
> By a partition, I mean a way of adding a dashed line between
> matrix rows or columns - either a dashed horizontal line between
> rows, or a dashed vertical line between columns.

between columns might not be possible, but basically bmatrix is just

\left[
\begin{array}{@{} ccc's {}@} % it does autodetection

\end{array}
\right]

so if lines between cols are needed then the above could be used

--

/daleif (remove RTFSIGNATURE from email address)

LaTeX FAQ: http://www.tex.ac.uk/faq
Superb Class: http://www.ctan.org/tex-archive/help/Catalogue/entries/memoir.html
LaTeX book: http://www.imf.au.dk/system/latex/bog/ (in Danish)
Remember to post minimal working examples.