Tkz-berge does not respond to node-distance specification

Question

I'm having some issues with the latest version of the tkz-berge package: it seems to be ignoring node-distance specifications. If I compile this file (using example n. 39 from the tkz-berge documentation),

\documentclass{article} 

\usepackage{tkz-berge}
\usetikzlibrary{positioning} 


\begin{document} 

\begin{tikzpicture}
 \SetVertexNoLabel
   \GraphInit[vstyle=Shade]
 \begin{scope}[rotate=-45]
    \grComplete[RA=6]{4}
 \end{scope}
{\tikzstyle{every node}=[node distance=1.64 cm]
 \NOEA(a2){a5}}
 \Edge(a2)(a5)
 \Edge(a1)(a5)
\end{tikzpicture}

\begin{tikzpicture}
 \SetVertexNoLabel
   \GraphInit[vstyle=Shade]
 \begin{scope}[rotate=-45]
    \grComplete[RA=6]{4}
 \end{scope}
{\tikzstyle{every node}=[node distance=5.64 cm]
 \NOEA(a2){a5}}
 \Edge(a2)(a5)
 \Edge(a1)(a5)
\end{tikzpicture}

\end{document}

I get two identical graphs, in spite of the different node distance specifications:

Any thoughts?

Answer 1

Yes in the first version of tkz-graph and tkz-berge I used node distance but it's a problem because it's difficult to use scaling option. The link is towards an old version. You need to use the version ( V 1.00 c 02/06/2011) from TeXLive 2011 or from CTAN .

Now you have two possibilites, in the first example I used unit=4cm directly as an option of \NOEA and in the second I used SetGraphUnit (remark : in your case you don't need a TeX group but in a more complex example, a group is useful) . The macro and the option are defined by tkz-graph

\documentclass{article} 
\usepackage{tkz-berge} %  V 1.00 c 02/06/2011 c for ctan
% the version from altermundus.fr is obsolete and I need to remove this version.

\begin{document} 

\begin{tikzpicture}
 \SetVertexNoLabel
   \GraphInit[vstyle=Shade]
 \begin{scope}[rotate=-45]
    \grComplete[RA=6]{4}
 \end{scope}

 \NOEA[unit=4cm](a2){a5}
 \Edge(a2)(a5)
 \Edge(a1)(a5)
\end{tikzpicture}

\begin{tikzpicture}
 \SetVertexNoLabel
 \GraphInit[vstyle=Shade]
 \begin{scope}[rotate=-45]
    \grComplete[RA=6]{4}
 \end{scope}
{\SetGraphUnit{5.64 cm}
 \NOEA(a2){a5}}
 \Edge(a2)(a5)
 \Edge(a1)(a5)
\end{tikzpicture}

\end{document}