A brief description of the Kearsley implementation including F77 code is in
the old (1993) computing tutorial:
http://www.ruppweb.org/xray/comp/superpos.htm
The example program only works with pairwise correspondence but still one
gets the idea.
Best wishes for 2013, BR
-----Original Message-----
From: CCP4 bulletin board [mailto:[log in to unmask]] On Behalf Of George
Sheldrick
Sent: Thursday, December 27, 2012 1:56 PM
To: [log in to unmask]
Subject: Re: [ccp4bb] 3D alignment of points (atoms)
A computationally elegant and probably faster approach is to use
quaternions, proposed by MacKay in Acta Cryst. A40 165-166. For a recent
description of this method see
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2958452/
George
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