Text following an arc

Question

I'm trying to have a text following an arc path. Instictively, I wrote

\draw (90:2) arc node{Some text} (90:210:2);

but this returned an error:

! Missing number, treated as zero.

I suppose I get this error because TikZ is expecting the second arc coordinates, but I can't figure out how to get it right.

Thanks for your help! :)

Answer 1

Use the decorations.text library, as documented in the manual, section 48.6, page 602.

The example given in the documentation is is a follows:

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{decorations.text}

\begin{document}
\begin{tikzpicture}[decoration={text along path,
    text={Some long text along a ridiculously long curve that}}]
  \draw [help lines] grid (3,2);
  \draw [decorate] (0,0) -- (3,1) arc (0:180:1.5 and 1) ;
\end{tikzpicture}
\end{document}

This produces the following output.

In this case your code should be

\draw [decorate,decoration={text along path,text={Some text}}] (90:2) arc (90:120:2);