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  1. home
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  3. John D. Cook Consulting Blog

John D. Cook Consulting Blog

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Science

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John D. Cook Consulting Blog

07.05.2025

5,000th post

Looking back on five thousand blog posts.

John D. Cook Consulting Blog

07.05.2025

A simple way to generate random points on a sphere

A way of generating points on a sphere that is intuitively clear and efficient. Comparison to the more common algorithm.

John D. Cook Consulting Blog

08.05.2025

Converting between quaternions and rotation matrices

Equations and Python code for going back and forth between quaternion and matrix representations of rotations.

John D. Cook Consulting Blog

08.05.2025

Composing rotations using quaternions

Rotations can be represented by matrices or by quaternions. An advantage of quaternions is that the composition of rotations is very simple.

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