Re: [dk-tug] tikz og matrix af matematik noder og styling

Martin Heller <[email protected]>
Newsgroups gmane.comp.tex.danish
Message-ID <[email protected]>
Lars Madsen wrote, on 14-09-2011 17:05:
>
> Kan du så fikse denne? I min version laver den huller i elipserne, det
> skal den ikke, den skulle bare markere de to gennemskæringer.

Du kan tegne forbindelserne først og ellipserne derefter:

\documentclass[a4paper]{memoir}
\usepackage{tikz}
\usetikzlibrary{matrix}
\usetikzlibrary{shapes.geometric}
\pgfdeclarelayer{front}
\pgfsetlayers{front,main}
\begin{document}


\begin{tikzpicture}
   \matrix (Q)
   [matrix of math nodes, row sep=2em,  column sep=2em,%
   every node/.append style={draw,ellipse}%
   ]
   {
         & 127 &   & 8 \\
     3.4 &     & 4 &   \\
         & 5   &   & 6 \\
    1    &     & 2 &   \\
   };

   \begin{pgfonlayer}{front}
     \begin{scope}[cross line/.style={preaction={draw=white, -,line 
width=6pt}}]
     \draw (Q-3-4) -- (Q-3-2) -- (Q-1-2);
     \draw (Q-2-3) -- (Q-1-4);
     \draw (Q-4-3) -- (Q-3-4);
     \draw (Q-4-1) -- (Q-3-2);
     \draw[cross line] (Q-3-4) -- (Q-1-4) -- (Q-1-2)
     -- (Q-2-1) -- (Q-2-3) -- (Q-4-3) -- (Q-4-1) -- (Q-2-1)
     ;
     \end{scope}
   \end{pgfonlayer}

\end{tikzpicture}

\end{document}
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