Math & Science ⇒ Typesetting a complex Matrix

[whordijk]

Hello everyone,

I'm am looking to typeset a particular matrix, but I haven't got any good ideas on how to start with this. The matrix is the following:

matrix.png (150.64 KiB) Viewed 2935 times

Any help would be greatly appreciated, thanks in advance!

[localghost]

I would not do that with a common environment like array and additional packages because the final result would not be satisfactory. The pgf/tikZ offers some structures that let you do such a matrix.

Code: Select all

\documentclass[11pt,a4paper]{article}
\usepackage[T1]{fontenc}
\usepackage{tikz}
\usetikzlibrary{calc,fit,matrix}

\begin{document}
  \begin{equation}
    \begin{tikzpicture}[baseline={($(current bounding box.center)-(0,0.75ex)$)}]
      \matrix (example) [%
        matrix of math nodes,
        nodes in empty cells,
        left delimiter=(,
        right delimiter=),
        nodes={anchor=center,minimum size=2em}
      ] {%
        & |[draw]|I_{2^0} & & & & & & \\
        & & & & & & & \\
        & & & |[draw]|I_{2^0} & & & & \\
        & & & & & & & \\
        & & & & & |[draw]|I_{2^0} & & \\
        & & & & & & & \\
        & & & & & & & |[draw]|I_{2^0} \\
        & & & & & & & \\
      };
      \node[draw,inner sep=0pt,fit=(example-1-3) (example-2-4)] {$I_{2^1}$};
      \node[draw,inner sep=0pt,fit=(example-1-5) (example-4-8)] {$I_{2^2}$};  % produces warning about "Underfull hbox"
      \node[draw,inner sep=0pt,fit=(example-5-7) (example-6-8)] {$I_{2^1}$};
    \end{tikzpicture}
  \end{equation}
\end{document} 

The above example embeds the matrix into a math environment just to show that this is possible.


Best regards and welcome to the board
Thorsten

[whordijk]

Oh, wow: that's awesome! Thanks a lot localghost, much appreciated!