1

I used Tikz library graphs to draw a graph, that is:

\usetikzlibrary{graphs}

Here's my code

\begin{tikzpicture}
    \graph  {
     "$x_1$" -> {
        "$x_2$" -> "$x_3$",
        "$x_4$" -> "$x_5,x_8$" 
     } -> "$x_6,x_7$"
    };
\end{tikzpicture}

However the arrow body miraculously disappeared:

How can I deal with it?

  • 1
    When I compile the code in the context of a minimal document I get a short arrow. It is shorter than the other arrows in the diagram, but it does not consist of only the arrowhead. Can you please combine the snippets into a full example document with \documentclass a preamble and \begin{document}...\end{document} that reproduces the issue (tex.meta.stackexchange.com/q/228/35864). An MWE makes sure that we are all talking about the same thing. It might also help if you could upload your .log file to a text-sharing website like pastebin.com – moewe May 26 at 3:48
  • In addition to @moewe's comment you can just increase the distance between the nodes, try e.g. \begin{tikzpicture} \graph[grow right=2cm] { "$x_1$" -> { "$x_2$" -> "$x_3$", "$x_4$" -> "$x_5,x_8$" } -> "$x_6,x_7$" }; \end{tikzpicture}. – marmot May 26 at 4:12
5

You can always increase the distances between the nodes. In the current graph this can be achieved by adjusting the grow right key.

\documentclass[tikz,border=3.14mm]{standalone}
\usetikzlibrary{graphs}
\begin{document}
\foreach \X in {1,1.1,...,2,1.9,1.8,...,1.1}
{\begin{tikzpicture}
\path (-0.3,0.3) rectangle (6.6,-1.4); % only for the animation
    \graph[grow right=\X cm]  
    {
     "$x_1$" -> {
        "$x_2$" -> "$x_3$",
        "$x_4$" -> "${x_5,x_8}$" 
     } -> "${x_6,x_7}$"
    };
\end{tikzpicture}}
\end{document}

enter image description here

  • Wow it very nice...a spring code :-). Very very good. – Sebastiano May 26 at 6:27

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