%% 
%%  Ein Beispiel der DANTE-Edition
%%  
%%  7. Auflage
%% 
%%  Beispiel 28-01-32 auf Seite 605.
%% 
%%  Copyright (C) 2016 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 
%% 
%% ==== 
% Show page(s) 1
%% 
%% 
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{145.16928pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{pst-eucl}
%StopShownPreambleCommands
\begin{document}
\begin{pspicture}(-1,-2.5)(2.5,1)
  \psset{unit=.00625}  \pstGeonode{A}
  \multido{\n=20+20}{18}{%
    \pstGeonode[PointName=M_{\n}](\n;\n){M_\n}}
  \pstGenericCurve[GenCurvFirst=A,GenCurvInc=20,
    linecolor=blue]{M_}{20}{360}
\end{pspicture}
\end{document}
