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# How to Create a Table in Tikz with Arrows from One Cell to Another?

April 15Hits:1

I would like to reproduce a table in tikz with arrows from predefined cell to another predefined cell.

Something looks like this.

What I did was the following:

\documentclass{standalone} \usepackage{tikz} \usetikzlibrary{calc,matrix,positioning}  \tikzset{      table/.style={         matrix of nodes,         row sep=-\pgflinewidth,         column sep=-\pgflinewidth,         nodes={rectangle,text width=3em,align=center},         text depth=1.25ex,         text height=2.5ex,         nodes in empty cells     }, } \begin{document}   \begin{tikzpicture}     % the matrix entries     \matrix (mat) [table]     {     & $x$ & $y$ & $z$ \\     $x$ & a  & a & b \\     $y$ & b & a & c \\     $z$ & c & d & e \\     };     % the matrix rules     \foreach \x in {1,...,3}     {       \draw          ([xshift=-.5\pgflinewidth]mat-\x-1.south west) --            ([xshift=-.5\pgflinewidth]mat-\x-4.south east);       }     \foreach \x in {1,...,3}     {       \draw          ([yshift=.5\pgflinewidth]mat-1-\x.north east) --          ([yshift=.5\pgflinewidth]mat-4-\x.south east);     }         % the arrows     \begin{scope}[shorten >=7pt,shorten <= 7pt]     \draw[->]  (mat-4-4.center) -- (mat-3-4.center);     \draw[->]  ([shift={(2.5pt,3pt)}]mat-4-4.center) -- ([shift={(2.5pt,2.5pt)}]mat-2-4.center);     \draw[->]  ([shift={(8pt,8pt)}]mat-2-4.center) -- ([shift={(8pt,8pt)}]mat-2-3.center);     \end{scope}     \end{tikzpicture} \end{document} 


But as you can see by reproducing the output of the above code, the arrows are note good in the sense that are not aligned.

Note: Some of the above code was found in this site but I can't remember exactly the link.

EDIT: Here is the output of my code:

Using a normal tabular along with the tikzmark library would be much easier. After marking the required positions and giving names for them, using \tikzmark{<a name>}, then comes a tikzpicture to draw the actual arrows as given below. Fine tuning may be required to get the best result.

\documentclass[border=5pt]{standalone}
\usepackage{tikz}
\usetikzlibrary{tikzmark}
\begin{document}

\renewcommand{\arraystretch}{1.5}
\begin{tabular}{c|c|c|c}
& $x$ & $y$ & $z$ \\ \hline
$x$ & a   & a\tikzmark{a}   & b\tikzmark{b}   \\ \hline
$y$ & b   & a   & \tikzmark{c}c  \\ \hline
$z$ & c   & d   & \tikzmark{e}e\tikzmark{ee}   \\
\end{tabular}

\begin{tikzpicture}[overlay,remember picture, shorten >=-3pt]
\draw[->,yshift=2ex] (pic cs:b) -- (pic cs:a) ;
\draw[->,xshift=-.7ex] (pic cs:e) -- (pic cs:c);
\draw[->,xshift=0.7ex] (pic cs:ee) -- (pic cs:b);
\end{tikzpicture}

\end{document}



Tags:tikz pgf

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