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Topic: Fitted plane has to pass through the origin
Replies: 3   Last Post: Dec 28, 2012 9:45 AM

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Dave Dodson

Posts: 690
Registered: 12/13/04
Re: Fitted plane has to pass through the origin
Posted: Dec 28, 2012 8:52 AM
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On Friday, December 28, 2012 7:08:55 AM UTC-6, Francesco Paraggio wrote:
> I need to interpolate a linear trend surface through a number of points but with the condition that the surface has to pass exactly through one of them.
>
> Can somebody give me any advice?


Google "Equality constrained least squares" for algorithms. Lapack has a driver xGGLSE for the problem. See www.netlib.org/lapack.

Dave



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