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Re: Fit 3D Line to data

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From Axel Berger <Axel_Berger@B.Maus.De>
Newsgroups comp.graphics.apps.gnuplot
Subject Re: Fit 3D Line to data
Date Sat, 28 Feb 2015 03:02:25 +0100
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Karl wrote:
> derive the minimum distance d(x,y,z) of a point xyz from that line,

If that was what what a 2D regression did, it would be obvious how to
generalise to 3D. But it doesn't. It minmizes the squares of the
y-distances for given x values, which at very steep gradients is quite
different from the distance between points and line.

Axel

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Thread

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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