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%% 
%%  Ein Beispiel der DANTE-Edition
%%  
%%  7. Auflage
%% 
%%  Beispiel 35-00-85 auf Seite 852.
%% 
%%  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{352.81416pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{pst-plot}
\makeatletter
\let\beginplot@ErrorLine\beginplot@line
\def\endplot@ErrorLine{\psErrorLine@ii}
\let\beginqp@ErrorLine\beginqp@line
\let\doqp@ErrorLine\doqp@line
\let\endqp@ErrorLine\endqp@line
\let\testqp@ErrorLine\testqp@line
%
\def\psErrorLine@ii{%
  \addto@pscode{\pst@cp \psline@iii \tx@ErrorLine}%
  \end@OpenObj%
}
\def\tx@ErrorLine{ErrorLine }
\def\@errorVal{0.3}%   +- 30% error range (only demo)
% Adapted from Line
\pst@def{ErrorLine}<{%
/min 1 \@errorVal\space sub def
/max 1 \@errorVal\space add def
NArray
n 0 eq not
  { ArrowA
    /n n 2 sub def
    CP 2 copy min mul moveto max mul Lineto
    n { 2 copy min mul moveto max mul Lineto } repeat
    CP
    4 2 roll
    ArrowB
    2 copy moveto pop 0
    L
    pop pop } if}>
\makeatother
%StopShownPreambleCommands
\begin{document}
\psset{xunit=0.0333cm,yunit=2.5cm}
\begin{pspicture}(0,-1)(400,1)
  \psline{->}(0,0)(400,0)
  \psline{->}(0,-1)(0,1)
  \psplot[%
	plotstyle=ErrorLine,%%%%%%%%%
	linecolor=red,
	linewidth=2pt,
	plotpoints=50,
       showpoints=true,
	dotstyle=o,
	dotsize=0.1]{0}{360}{x sin}
\end{pspicture}
\end{document}