[pstricks] First try with \multido

[Werner Grundlingh]

Here's an abbreviated version that provides what you're after...

\documentclass{article}

\usepackage{pst-plot,multido}

\begin{document}

\SpecialCoor %PSTricks polar coordinates
\psset{unit=2cm}

\begin{pspicture}(-3.5,-3.5)(3.5,3.5)

  \psaxes[ticksize=2pt, labels=none]{->}(0,0)(-3.1,-3.1)(3.2,3.2)

  \psset{linewidth=0.5pt}
  \multido{\iRadius=1+1}{3}{\pscircle(0,0){\iRadius}}

  \psset{linestyle=dotted}
  \multido{\iAngle=0+15,\iRay=0+1}{24}{
    \psline(0;0)(3;\iAngle)
    \rput(3.35;\iAngle){%
      $\scriptstyle
        \ifnum\iRay=0
          0 % 0 degrees
        \else\ifnum\iRay=12
          \pi % 180 degrees
        \else
          \frac{\iRay\pi}{12}
        \fi\fi$
    }
  }

\end{pspicture}

\end{document}


[image: Inline image 1]
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