LaTeX.org

After reviewing my previous post, I realized that I made an error. The corrected version follows.


\documentclass{article}
\usepackage{pstricks-add}
\def\psvlabel#1{%
\ifnum#1=30 $\frac{\pi}{6}$\else
\ifnum#1=60 $\frac{\pi}{3}$\else
\ifnum#1=90 $\frac{\pi}{2}$\else
\ifnum#1=120 $\frac{2\pi}{3 ...

You can modify Herbert's code to get the radian measures in reduced form as follows.

\documentclass{article}
\usepackage{pstricks-add}
\def\psvlabel#1{%
\ifnum#1=30 $\frac{\pi}{6}$\else
\ifnum#1=60 $\frac{\pi}{3}$\else
\ifnum#1=90 $\frac{\pi}{2}$\else
\ifnum#1=120 $\frac{2\pi}{3}$\else ...