Are you using R's search capabilities (to say nothing of Google's)?
RSiteSearch("Gompertz", restr="func")
brings up several functions/packages that might do what you need.
Bert Gunter
Genentech Nonclinical Biostatistics
-----Original Message-----
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of David Winsemius
Sent: Thursday, May 27, 2010 10:04 AM
To: Frostygoat
Cc: R-help@r-project.org Help; Bert Gunter
Subject: Re: [R] sequential treatment of a vector for formula
On May 27, 2010, at 12:32 PM, Frostygoat wrote:
> Thanks very much David. Bert, I've seen the Survival package and it
survival ... correct capitalization is important in R.
> does not do what I need, which is to fit Gompertz curves to survival
> data and compute lifetable statistics for other functions. There is
> the SSgompertz package for growth curves, not what I need either.
Have you reviewed the capabilities of the eha package?
http://cran.r-project.org/web/packages/eha/eha.pdf
I thought that I had seen examples of the use of the Design package
(and presumably this would have applied to the rms package) for
fitting Gompertz models in an accelerated failure time framework, but
checking Harrell's RMS text fails to confirm this memory.
--
David Winsemius, MD
West Hartford, CT
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