I am familiar with the
JuliaSetPlot function of Mathematica, but I was wondering if it is possible to get Mathematica to plot external rays of some specified angles. I can see in the
JuliaSetBoettcher there is an example but this isn't very good and does not seem immediately adaptable. Ideally I would like something of the form
externalray[c_,j_] which would plot the external ray of angle
j for the Julia set of $f_c(z)=z^2+c$. Is there some simple implementation of this?
Edit: A common program that can do this is Wolf Jung's Mandel. There is some unofficial documentation here. Perhaps this would be useful to someone with more programming experience.