matlab - helix central axis angle -


i have n points in [x,y,z] , kind of takes helix shape. possible find central axis of such helix. not regular helix central axis either of global x, y , z axis

when plot curve looks @ particular angle global z axis.

enter image description here

my aim know angle central axis making global z axis?

if n points dense enough (or equi-distant), tangential vectors (diff vectors of consecutive points) form cone direction of center axis coincides direction of helix axis , base plane orthogonal axis direction. projection of helix normal plane give circle center on helix axis.


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