[R] gam.plot y axes meaning
Simon Wood
simon at stats.gla.ac.uk
Tue May 13 14:41:14 CEST 2003
> Im starting to work with GAM using mgcv in R. When I plot a gam object
> using gam.plot, the y axes is labelled s(cov,edf), but I dont undertand
> what means the units of y axes (is related with the predictor variable?).
- The y axes are on the scale of the linear predictor of your model. i.e.
The units are link(response units). [Note that smooths are "centred" to
ensure model identifiability - they sum to 0 over the covariate values].
best,
Simon
_____________________________________________________________________
> Simon Wood simon at stats.gla.ac.uk www.stats.gla.ac.uk/~simon/
>> Department of Statistics, University of Glasgow, Glasgow, G12 8QQ
>>> Direct telephone: (0)141 330 4530 Fax: (0)141 330 4814
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