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- From: Simon Giraudot <>
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- Subject: Re: [cgal-discuss] How to get the axes in Principal Component Analysis
- Date: Tue, 2 Aug 2016 07:44:38 +0200
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Le 25/07/2016 à 15:05, 刘 川 a écrit :
Hi!
I'm computing the bounding box with PCA in CGAL according to Principal Component Analysis.
I follow the example the web page offers. But I found it really ridiculous that I cannot get the three orientation axes of PCA (of course in 3D case).
Does anyone know how to get the axes? Hello,
If you are fitting a plane with PCA, the axes information is embedded in this plane.
As you can see on the reference of CGAL::Plane_3, the class provides methods base1(), base2() and orthogonal_vector() that return the 3 vectors you are looking for. http://doc.cgal.org/latest/Kernel_23/classCGAL_1_1Plane__3.html -- Simon Giraudot, PhD R&D Engineer GeometryFactory - http://geometryfactory.com/ |
- Re: [cgal-discuss] How to get the axes in Principal Component Analysis, Simon Giraudot, 08/02/2016
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