Expressing 2- and 3-D coordinates

[Francois Bonnarel]

Ok, Arnold,
  I just want to say that there are good reasons to refer to either
component independantly. It was difficult with the list up to now.
 <From arots at head.cfa.harvard.edu  Thu Dec 22 00:14:30 2005
<X-Spam-Checker-Version: SpamAssassin 2.55 (1.174.2.19-2003-05-19-exp)
<
<Hm.  Frankly, it should not be taken as an excuse to rip 2-D and 3-D
<coordinates apart.  One needs to characterize the vector, not the
<vector components.
<
 Regards
François

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Francois   Bonnarel               Observatoire Astronomique de Strasbourg
CDS (Centre de donnees          11, rue de l'Universite
astronomiques de Strasbourg)    F--67000 Strasbourg (France)

Tel: +33-(0)3 90 24 24 11       WWW: http://cdsweb.u-strasbg.fr/people/fb.html
Fax: +33-(0)3 90 24 24 25       E-mail: bonnarel at astro.u-strasbg.fr
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