sverchok-syntax-data

Quick Reference

Why This Matters

Incorrect data nesting is the #1 source of errors in Sverchok. Every socket expects data at a specific nesting level. If you pass level-2 data where level-3 is expected, the node silently produces wrong geometry or crashes. There is no automatic correction.

The Nesting Level Convention

Level 0: scalar              5.0
Level 1: list of scalars     [1, 2, 3]
Level 2: list of lists       [[1, 2, 3], [4, 5, 6]]
Level 3: list of list of lists  [[(x,y,z), (x,y,z)], [(x,y,z)]]

Standard Socket Nesting Levels