Quaternions in Python
Erik Max Francis
max at alcyone.com
Sat Oct 6 21:32:41 CEST 2001
Johann Hibschman wrote:
> >>>>> "Erik" == Erik Max Francis <max at alcyone.com> writes:
> Erik> You're missing the point. Quaternions can behave
> Erik> qualitatively differently from their corresponding matrices.
> Eh? Say you have the Pauli spin matrices (complex 2x2 matrices), how
> on earth do those behave qualitatively different from quaternions? As
> far as I can tell, they *are* quaternions.
That's perfectly valid, but I don't think it's what the poster I
responded to meant. He meant encoding the transform represented by the
quarternion into a matrix. As I and others have pointed out, that
presents problems, because matrices for transformations are more fragile
than quarternions in some areas.
Erik Max Francis / max at alcyone.com / http://www.alcyone.com/max/
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