%% 
%%  A DANTE-Edition example
%% 
%%  Example 30-04-17 on page 615.
%% 
%%  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{201.70511pt}
\setlength\parindent{0pt}

\usepackage{pstricks}

\begin{document}
\begin{pspicture}(-2,-1)(2,2.2)
\psset{arrows=->}
\psline(0,2)\psline(2,0)\psline(-1,-1)
\uput[180](0,2){$y$}
\uput[-90](2,0){$x$}
\uput[0](-1,-1){$z$}
\psline[linecolor=blue](0,1)
\psline[linecolor=blue](-0.5,-0.5)
\uput[0](0,1){$\overrightarrow{E}$}
\uput[90](-0.5,-0.5){$\overrightarrow{B}$}
\end{pspicture}
\end{document}
