How do I put loops at an angle in TikZ?

Question

I'm trying to draw a graph in TikZ that has self-loops, and I'd like to be able to specify their position not only as "right" or "above", but something like "above right", i.e. at a 45° angle.

How do I do that?

Answer 1

There is an example in the PGF v. 2.10 manual (section 51.4 "Loops") that demonstrates this:

\documentclass{article}
\usepackage{tikz}

\begin{document}
\begin{tikzpicture}
\node [circle,draw] {a} edge [in=30,out=60,loop] ();
\end{tikzpicture}
\end{document}