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Generate knotvector for interpolation #4804

Answered by portnov
rendetto asked this question in Q&A
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In Sverchok-Extra, there is a set of nodes for Nurbs curve interpolation and approximation:

I have no idea yet how useful they are in practice, so for now they are only in Sverchok-Extra.
They are based on the following idea: if you want to find a curve, which goes through the given point, you in fact have one equation. If you want this curve go through N given points, then you have N equations. Also you may want to specify not only points through which the curve goes, but some other conditions, for example, curve tangent vectors at some points.
So, if you want this curve to have M control points, and you have N conditions of some sort, you have a system of equations with M unknowns and …

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@rendetto
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@portnov
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portnov Dec 8, 2022
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