SPLUS 2000 on WinNT
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Hello Users -
I have just found (I think) that the request predict(model,type="terms"),
when plotted with the appropriate transformations for the model, provides
the same estimate that the request predict(model,type="response",p=.5)
gives, though this might only be true for a single covariate. Can anyone
tell me if this is wrong?
While the SPLUS manual suggests on page 336 that predict(model,
type="terms") are useful for examination of terms in the model that expand
to multiple dummy variables, such as factors...", would it be at all
sensible to show an interaction between covariates and or factors in a
survReg|( ) model by plotting the 50 percentile response against the factor
levels using, say, xyplot? e.g.
xyplot(fifty~covariate1|factor2,data=data)
Thanks,
andrew
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Dr. Andrew Beckerman
Institute of Biological Science
University of Stirling, Stirling FK9 4LA, Scotland, UK
phone:+44 (0)1786 467808 fax: +44 (0)1786 464994
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