Points -> Closed curves

I want to make the points in surface into several closed curves like above pictures.
What should I do?
Even if it’s new, it’s fine.
Thanks in advance!

Hi and welcome to the forum!

You can connect a polyline component with in-between a “Flip matrix” component if you want U or V direction.
2020-03-30 22_20_33-Window

Or, if you want to extract directly the lines, use “Iso Curve”:

isocurves.gh (5.4 KB)

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Thank you for reply :slightly_smiling_face: :grinning: