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Re: Fit 3D Line to data

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From	Hans-Bernhard Bröker <HBBroeker@t-online.de>
Newsgroups	comp.graphics.apps.gnuplot
Subject	Re: Fit 3D Line to data
Date	Wed, 25 Feb 2015 19:38:41 +0100
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Am 25.02.2015 um 15:28 schrieb Gavin Buxton:
> Pick your 3 favourite points and you have a plane! Seriously though I suspect its because you have too few data points....

That's the next part of the problem.  A straight line in 3D space has 4 
real degrees of freedom.  But I know of no implicit equation that really 
has just 4 parameters.  So there will be extraneous parameters in the 
fit, which would have to be cancelled out by constraints, to avoid 
interdependencies.

All that makes for an even more tricky job to set up for 'fit' than it 
already is.

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Fit 3D Line to data Erik Zweigle <erikzweigle@gmail.com> - 2015-02-22 22:27 -0800
  Re: Fit 3D Line to data Karl <mail.kfr@gmx.net> - 2015-02-24 10:36 +0100
  Re: Fit 3D Line to data Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2015-02-24 20:16 +0100
    Re: Fit 3D Line to data Karl <mail.kfr@gmx.net> - 2015-02-25 14:34 +0100
      Re: Fit 3D Line to data Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2015-02-25 19:25 +0100
      Re: Fit 3D Line to data Axel Berger <Axel_Berger@B.Maus.De> - 2015-02-28 03:02 +0100
        Re: Fit 3D Line to data Erik Zweigle <erikzweigle@gmail.com> - 2015-02-28 12:47 -0800
        Re: Fit 3D Line to data Karl <mail.kfr@gmx.net> - 2015-03-01 06:46 +0100
  Re: Fit 3D Line to data Gavin Buxton <gavinbuxton@gmail.com> - 2015-02-25 06:28 -0800
    Re: Fit 3D Line to data Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2015-02-25 19:38 +0100

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