Displaying 4 results from an estimated 4 matches for "nlme2".
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nlme
2000 Apr 07
1
lme questions (was difference between splus and R)
...e a reference for
the validity of REML-based LRTs, so can you please supply one?
There is a warning note:
Likelihood comparisons are not meaningful for objects fit using
restricted maximum likelihood and with different fixed effects.
which does not say that the converse *is* meaningful. nlme2 even gives the
comparisons in the excluded case. Bill Venables' warning (V&R3 p.203) is
rather stronger.
S does not usually stop you doing non-meaningful statistics, so do not
assume that because it gives a result it is `legitimate'.
--
Brian D. Ripley, ripley at sta...
2000 Sep 22
6
lme
Hello,
I need to use a procedure in R that similar to lme in Splus.. is this
particular procedure has been implemented in the recent version? thanks.
Regards,
Peppy Adi-Purnomo
Energy Market Analyst
Energy Link Ltd
Telp.: +64 3 479 2475
Fax. : +64 3 477 8463
www.energylink.co.nz
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r-help mailing list -- Read
2006 Nov 03
1
Using a deriv function in nlme
...eriv(~100/(1+exp(-L))*(1-exp(-exp(logR)*x)),
c("L", "logR"), function(x,L,logR){} )
L1.nls<-nls(ability ~ boundedexp(age,limit,lograte),
data=L1.gd, start=c(limit=2,lograte=-3))
summary(L1.nls)
. but here I run into problems
L1.nlme2<-nlme(ability~boundedexp(age,limit,lograte),
data=L1.gd, fixed=limit+lograte~1,start=c(limit=2,lograte=-3))
Any suggestions would be well appreciated!
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2000 May 16
4
How do I add fitted curves to coplots?
G''day
I''ve been performing an analysis of some data by a follow the leader
method (Bad I know but it seems to work and I think I understand all the
steps now) and I''ve run into a problem. The analysis is for all practical
purposes identical to the non-linear mixed effects analysis performed on
Ludbrooks Rabbit data in the second edition of Venables & Ripley (page