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Re: polyfit problem?
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From: |
ldoolitt |
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Subject: |
Re: polyfit problem? |
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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