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Re: polyfit problem?

From: ldoolitt
Subject: Re: polyfit problem?
Date: Tue, 16 Mar 1999 17:29:39 -0500 (EST)

> octave's polyfit does no pre-scaling before setting up the matrix.
> I find that necessary for any kind of real work with polynomial fits.
> When I ran into this, I prescaled the data before calling polyfit,
> rather than "fixing" polyfit.  Sorry.

I realize I could be a little less mysterious in this statement.
By "prescaling" I mean offsetting and normalizing the X values
to lie in the range [-1:1].
      - Larry

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