murdoch at stats.uwo.ca
Mon Oct 1 12:50:35 CEST 2007
On 01/10/2007 3:31 AM, Abu Naser wrote:
> Hi all users,
> I want to calculate angles from two vector using quaternion. I believe , it is possible using orientlib. Since
> I am not an quaternion expart, I need assistance to make sure I am not doing anything wrong. Could anyone please
> expain it how to do it using orientlib.
> x <- quaternion(c(1,0,0,0))
> y <- quaternion(c(0,1,0,0))
But this doesn't calculate angles between vectors, it calculates angles
between orientations. See
Murdoch, D. (2003). Orientlib: an R package for orientation data.
Journal of Statistical Software, 8(19), 1-11.
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