\documentclass{article}
% translate with >> pdflatex -shell-escape <file>

% This file is used as unit test for pgfplots, copyright by Christian Feuersaenger.
% 
% See
%   http://pgfplots.sourceforge.net/pgfplots.pdf
% for pgfplots.
%
% Any required input files (for <plot table> or <plot file> or the table package) can be downloaded
% at
% http://www.ctan.org/tex-archive/graphics/pgf/contrib/pgfplots/doc/latex/
% and
% http://www.ctan.org/tex-archive/graphics/pgf/contrib/pgfplots/doc/latex/plotdata/

\usepackage{pgfplots}
\usepackage{pgfplotstable}
\pgfplotsset{compat=1.3}

\pagestyle{empty}

\begin{document}

\pgfplotsset{
	error bars/.cd,
	y dir=both,
	y explicit,
	x dir=both,
	x explicit,
	error bar style={black,dotted,error bars/error mark=square*,error bars/error mark options={current plot style}},
}

\pgfplotstableread{
	x y ex ey
	 0 0    0.5 0.1  
	 0.1 0.1     0.05 0.2 
	 0.2 0.2  	  0 0.05 
	 0.5 0.5    0.1 0.2 
	 1 1    0.3 0.1 
}\tablemacro

\begin{tikzpicture}

\begin{axis}[title={symmetric from struct}]
\addplot+[
]
	table[x error=ex,y error=ey] {\tablemacro};
\end{axis}
\end{tikzpicture}

\end{document}
