Size of vertices of a graph in Tikz

Question

I'm trying to produce a graph in Tikz using the Simple style but the vertices won't get smaller than 6pt or so and I'd like them to be much smaller. The code looks like this and if you try it out, the vertices don't actually shrink to 2pt.

\begin{tikzpicture}
\GraphInit[vstyle=Simple]
\SetGraphUnit{1.5}
\tikzset{VertexStyle/.style = {shape = circle,fill = black,minimum size = 2pt}}
\Vertex{D}
\NOEA(D){A}
\SOEA(A){B}
\SOEA(D){C}
         % \Edges{A,B,C,D,A}
\Edges(A,B,C,D,A)
\end{tikzpicture}

Any ideas?

Answer 1

You also need to set the inner sep value to 0pt. This parameter sets the inner separation between the node content (empty box in your case) and the official node border. The minimal size, however, controls the minimal height and width of the node content (only).

Answer 2

Yes is it to control the minimal size of the inside of nodes by default I keep inner sep =2pt. You make a mistake with Edgesnow with the ctan version you need to use parenthesis (A,B,C,D). There is a macro to draw directly a square if you want.

\documentclass{scrartcl}

\usepackage{tkz-graph}

\begin{document}
    \begin{tikzpicture}
    \GraphInit[vstyle=Simple]
    \SetGraphUnit{1.5}
    \tikzset{VertexStyle/.style = {shape = circle,fill = black,minimum size = 2pt,inner sep=0pt}}
    \Vertex{D}
    \NOEA(D){A}
    \SOEA(A){B}
    \SOEA(D){C}
 \Edges(A,B,C,D,A)
    \end{tikzpicture} 
\end{document}  

to get a square : i use a circle because the nodes are on a circle :)

\begin{tikzpicture} 
\SetGraphUnit{2} 
\Vertices{circle}{A,B,C,D}
\end{tikzpicture}