[R] Meaning of pterms in survreg object?
johannes at huesing.name
Thu Jan 27 21:43:15 CET 2011
Is there a special mailing list for the survival package where my
question would have been more appropriate?
Johannes Huesing <johannes at huesing.name> [Mon, Jan 10, 2011 at 09:26:37PM CET]:
> I am trying to model survival data with a Weibull distribution
> using survreg. Units are clustered two apiece, sometimes receiving
> the same treatment and sometimes opposing treatment.
> Residual and predict methods are not carried out on the survreg
> object, although the component linear.predictors exists for the
> survreg object. Looking at the code I see that the residual method
> refuses to run if any of the components of the pterms vector is
> equal to 2.
> When taking the logarithm of the data and trying a linear mixed
> model, residuals and predicted values are produced just fine.
> So what is pterms and why is it that, when any component of it
> is 2, residuals are not allowed to be displayed?
> Johannes Hüsing There is something fascinating about science.
> One gets such wholesale returns of conjecture
> mailto:johannes at huesing.name from such a trifling investment of fact.
> http://derwisch.wikidot.com (Mark Twain, "Life on the Mississippi")
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
Johannes Hüsing There is something fascinating about science.
One gets such wholesale returns of conjecture
mailto:johannes at huesing.name from such a trifling investment of fact.
http://derwisch.wikidot.com (Mark Twain, "Life on the Mississippi")
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