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On Mon, 19 Oct 2009, Prof Brian Ripley wrote:
RTFM time: h^3 is not the cube of h in an R formula (for that you need
I(h^3)). See ?formula, for example.
Simpler would be lm(w ~ poly(h, 3, raw=TRUE))
On Sun, 18 Oct 2009, michael_ka...@earthlink.net wrote:
Full_Name: Michael Aaron Karsh
Version: 2.8.0.
OS: Windows XP
Submission from: (NULL) (75.61.102.255)
When I try lm(w ~ h^3 + h^2 + h) for example, it only gives coefficients
for the intercept and for h. It does not give coefficients for h^2 or h^3.
So it is behaving correctly.
--
Brian D. Ripley, rip...@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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--
Brian D. Ripley, rip...@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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