How can I extract a curve from an edge loop?

Please provide more details. Polygons? NURBS?

Carve SOP might help.

Wolfwood
Please provide more details. Polygons? NURBS?

Carve SOP might help.

I want to extract or convert a selection of (poly) edges into a nurbs curve.

the problem is having consistent point numbers to do it.

here's a .hip file with a hack to do what you want.
you just need to make sure the poly loop is on the edge of the points you want to select.

I'm sure there's a cleverer way. I'm just not cleverer.

Jerry

check out the divide sop with the remove shared edges option on, that might help.
Use convert or fit sops to turn the result into a nurbs curve.

Thanks!
How can I close the curve after a convert SOP?

Use the ends sop. Might be better to do it before though.
Also, try adding a basis sop after the convert and making the knots uniform

Simon
Use the ends sop. Might be better to do it before though.
Also, try adding a basis sop after the convert and making the knots uniform

Thanks, that works fine.