\psset{xunit=1cm, yunit=1cm}
\begin{pspicture*}(-2.5,-2.5)(2.5,2.5)
\psgrid(-2,-2)(2,2)
\SpecialCoor
%\degrees[360]
%\multido{\iX=0+30}{13}{\psline[linecolor=blue](1,1)(\lineto(0.25;\iX))}
\multido{\iX=0+30}{12}{\psline[linecolor=orange](1,1)(0.5cm;\iX)}


%\pscustom[linecolor = blue]{
%   \code{/x1 30 cos 1 mul def   %x= r*cos phi und y=r*sin phi
%         /y1 30 sin 1 mul def
%         /x2 60 cos 1 mul def
%         /y2 60 sin 1 mul def
%         /x3 90 cos 1 mul def
%         /y3 90 sin 1 mul def}
%	\psline(!1 1)(!x1 y1) \closepath
%	\psline(!1 1)(!x2 y2) \closepath
%	\psline(!1 1)(!x3 y3) \closepath}	




\end{pspicture*}