SimplyDraw - Arcs
This is a rather simple example that shows how to use arcs.
Perhaps the use of the
atbegin() function encourages you to take a look at the documentation of PyX. You might find many more interesting things.
set(scale=2) a = 35 stroke(circle(0, 0, 1), [linestyle.dashed]) b = path(arc(0, 0, 1, -a, a)) stroke(b, [linewidth.thick]) (x, y) = b.atbegin() stroke(line(x, -1, x, 1))