[Help] How to close off the edge to make manifold mesh after marching cube?

[kevinsmia1939]

Problem statement

Hi,
I am looking for a way to close off the edge of a surface after it has been generated by marching cube. I could not find relevant information on how to proceed. Are there a way to close this edge loop with Sverchok?
I want to close the edge loop to make manifold mesh for 3D printing purposes.

Steps to reproduce

1. Create Gyroid surface like in the image.

Sverchok version

Latest master branch commit: ff02e7d
Blender on Linux
openSUSE Tumbleweed

[portnov]

You can try to use "fill holes" node. It will simply add an N-gon (with really high N in this case) face at each hole.