[R] about lme

[Spencer Graves]

      In case the suggested model is NOT what you want, the book by 
Pinheiro and Bates describes other models that may be closer to what you 
want.  Also, you might wish to consider lme in both packages nlme and 
lme4.  They are different, and overall lme4 is better, though it may not 
be in any particular case.  Bates is the overall architect for both, and 
the list of people who know more about this subject than he does is 
exceedingly small. 

      hope this helps.  spencer graves

F Z wrote:

> Hi
>
> I suspect that what you want to do is to have a randon intercept for 
> Rails. i.e.:
>
> m<-lme(travel ~ Rail, data = Rail, random = ~ 1 | Rail)
>
>
> You might want to try the documentation under C:\Program 
> Files\R\rw1091\library\lme4\doc and also the book "Mixed-effect models 
> in S and S-Plus" by Pinheiro and Bates.
>
>
> Francisco
>
>> From: "angel hellraiser" <darkjacknife at hotmail.com>
>> To: r-help at stat.math.ethz.ch
>> Subject: [R] about lme
>> Date: Fri, 06 Aug 2004 16:40:43 +0000
>>
>> Hi R-users:
>>
>> I've got a problem with lme.
>>
>> In Rail data,I try to model the next one
>>
>> lme(travel ~ Rail, data = Rail, random = ~ Rail | Rail)
>>
>> I want travel = Rail(i) + Rail(j) + epsilon(i,j)
>>
>> say, an effect fixed for every Rail and other for Rail(j) random, R says
>> fewer observations or false convergence.
>>
>> Why can't I model an effect fixed and other random?
>>
>> Thanks in advance.
>>
>> My e-mail is darkjacknife at hotmail.com
>>
>>
>> Descárgalo y pruébalo 2 meses gratis.
>>
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>
>
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