%%
%% A DANTE-Edition example
%%
%% Example 29-02-30 on page 580.
%%
%% Copyright (C) 2011 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[]{article}
\pagestyle{empty}
\setlength\textwidth{153.70511pt}
\setlength\parindent{0pt}
\usepackage{pstricks,pst-plot,pst-eucl}
\begin{document}
\psset{unit=.75}
\begin{pspicture}[shift=-.5](-3,-4)(3,4)
\def\F{x 180 mul 3.1415926 div cos 2 mul}
\pstGeonode(0.3,-1){O}\pstGeonode(2,.5){M}
\ncline[linecolor=blue, arrowscale=2]{->}{O}{M}
\psaxes{->}(0,0)(-3,-3)(3,4)
\psplot[linewidth=2pt]{-3.14}{3.14}{\F}
\psset{PointSymbol=*}
\pstCircleOA{O}{M}
\psset{PointSymbol=o}
\pstInterFC{\F}{O}{M}{1}{N_0}
\pstInterFC{\F}{O}{M}{-1}{N_1}
\pstInterFC{\F}{O}{M}{-2}{N_2}
\pstInterFC{\F}{O}{M}{2}{N_3}
\end{pspicture}
\end{document}
