Hi Mike,

>>Is it the same shape - but inverted?<<

Yes, it is simply to show range of transition.

Attached is a nod file for wrapping sine wave around a circle.

I could have taken the short cut using mathPts node
with readily available equations, however I have taken the
scenic route, as an exercise in using vectors

James

UPDATED: nod file here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=6158.47