With
\documentclass{standalone}
\usepackage{pgfplots}
\begin{document}
\begin{tikzpicture}
\begin{axis}[samples=10, domain=0:pi]
\addplot {x-sin(x)};
\end{axis}
\end{tikzpicture}
\end{document}
I get a plot and an x axis from 0 to pi and labels 0, 1, 2, and 3.
What is the best way to get labels with pi instead of whole numbers on the axis?
