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Subject: Re: homogeneous line intersection
Date: Mon, 29 Nov 2010 16:13:03 +0000 (UTC)
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"Bruno Luong" <b.luong@fogale.findmycountry> wrote in message <id07lj$q0i$1@fred.mathworks.com>...
> "jcarneiro carneiro" <jcarneiro@netcabo.pt> wrote in message <icvvmj$mca$1@fred.mathworks.com>...
> > Hi all,
> > 
> > Havingm
> > 
> > A= A1x1+ A2x2+ A3x3 = 0
> > B= B1x1+ B2x2+ B3x3 = 0
> > 
> 
> The line is parametrized by: x1=t*c(1), x2=t*c(2), x3=t*c(3), with
> c = null([A1 A2 A3; B1 B2 B3];
> 
> Bruno
- - - - - - - - -
  Also x = t*cross([A1,A2,A3],[B1,B2,B3]);

Roger Stafford