finding where a graph intersect with itself

So this is probably a really easy and stupid question, but my mind is
drawing a totaly blank right now. I have two vectors, call them G and
B, that when plotted as plot(G,B), it comes up as sort of circle (think
of the Jesus fish). Now I'm interested in finding where this circle
intersects with itself (imagine the forked part of the tail of the
fish), but I'm not sure how to do this. It seems like I could use the
'fzero' command, but that needs to use a function of which I'm not sure
how to create.

Any ideas on how to find this?

thanks

.

Relevant Pages

  • Re: [EGN] Re: turing completeness
    ... You do say, "sort of", so you are probably aware that Platonists ... I don't believe that a mind is "just an engineering problem". ... no such beast as a "true circle" can exist. ... I do think building a brain is just an engineering problem. ...
    (comp.programming)
  • Re: Ping Vinny: GSimple
    ... I was able to draw a circle, get a few distances, snap seems to work on a ... altho not on a circle. ... I assumed it could draw in 3-D, from the isometric/axonometric views of the ... How does one get those views from a 2-D drawing? ...
    (alt.machines.cnc)
  • Re: LOS and Line Rendering
    ... That's when high frequencies masquerade as low frequencies? ... > implementation a brute-force automated test of all possible perimeter ... "perfect" line drawing. ... perimeter tile into 1,000 subpixels, for a large enough circle you'll see ...
    (rec.games.roguelike.development)
  • Re: In what language do you think?
    ... visualise scripts in your mind? ... When you think about circle, for instance, you don't ... The circle in my mind doesn't have colours nor size. ... manipulates images, and acts accordingly to his imagination, like our ...
    (sci.lang)
  • Re: Strange bits of Oklahoma?
    ... >> round things which doen't necessarily scan a full circle. ... >That makes perfect sense. ... and the squares are defined by various roads - if you turn roads on in ... Your mind is like a motorway. ...
    (uk.rec.sheds)