How to construct block matrix with shadowed entries?

Asked Mar 25 '15 at 11:53

Active Mar 25 '15 at 12:46

Viewed 117 times

Is there a simple way of drawing matrices with shadowed blocks like the ones in the picture?

enter image description here

I've tried something like Gonzalo Medina's proposal:

%% with these packages loaded
%% \usepackage{tikz}
%% \usetikzlibrary{matrix}
\begin{frame}
  \frametitle{Other matrix groups}
  \begin{itemize}
  \item Upper triangular $UT(p,q)$:

    \begin{tikzpicture}[every node/.style={anchor=base,text depth=.5ex,text height=2ex,text width=1em}]
      \matrix [matrix of nodes,nodes in empty cells]
              {
                |[fill=black]| a  & |[fill=black]| b \\
                |[fill=white]| 0  & |[fill=black]| c \\
              };
    \end{tikzpicture}
  \end{itemize}
\end{frame}

However, I get an error

! Undefined control sequence.

\pgf@matrix@last@nextcell@options

l.307 \end{frame}

nonstop compilation yields

Any suggestions?

edited Apr 13 '17 at 12:34

Community

asked Mar 25 '15 at 11:53

Dox

5,729

1

What did you try/see so far that you consider to be not simple enough? – Paul Gessler Mar 25 '15 at 11:56
where are the shadows? – percusse Mar 25 '15 at 11:57
1

Something like vertical lines in matrix using tikz package? To put delimiters around these matrices use the optional arguments left delimiter=(,right delimiter=\} etc. – Mar 25 '15 at 12:40
@PaulGessler I found some examples with lots of TikZ style definitions, but I found some simpler examples... so I edit the question because I get an error. – Dox Mar 25 '15 at 12:48
@percusse Shadowed entries = entries with a pattern of lines. ;-P – Dox Mar 25 '15 at 12:49
@Andrew Yes, something like that! Thank you for the suggestion. – Dox Mar 25 '15 at 12:50
2

if using beamer ampersand replacement=\& and use \& in the matrix – percusse Mar 25 '15 at 12:51

How to construct block matrix with shadowed entries?

0 Answers0