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. 1996 Sep;20(3):339-45.
doi: 10.1016/0097-8485(95)00075-5.

Algorithms for finding the axis of a helix: fast rotational and parametric least-squares methods

J A Christopher  1 , R Swanson, T O Baldwin
Affiliations

Algorithms for finding the axis of a helix: fast rotational and parametric least-squares methods

J A Christopher et al. Comput Chem. 1996 Sep.

Abstract

Several methods for finding the axis of a helix are presented and compared. The most accurate determines the helix axis as the axis of rotation necessary to map point i to point i + 1 of the helix. The fastest method calculates the helix axis as the best-fit line through the coordinates by a three-dimensional parametric linear least-squares algorithm, taking advantage of the sequential nature of the data.

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