[R] quick question about lme()

[YA]

Hi Thierry,

Thank you very much.

Best regards,

YA




On 2012-4-15 1:06, ONKELINX, Thierry wrote:
> Both specifications are the same model. An intercept is added by default unless you use +0 or -1
> like ~0 + LEAD|GRP or ~ -1 + LEAD|GRP
> ________________________________________
> Van: r-help-bounces at r-project.org [r-help-bounces at r-project.org] namens YA [xinxi813 at 163.com]
> Verzonden: zaterdag 14 april 2012 18:33
> Aan: r-help at r-project.org
> Onderwerp: [R] quick question about lme()
>
> Hi everyone,
>
> I have a quick question about the random part in lme().
>
> Here is the code:
>
>> lme(WBEING~HRS+LEAD+G.HRS,random=~LEAD|GRP)
> I want to specify both random intercept and random slope of LEAD. Is the
> random intercept already in it? or should I specify it like:
>
>> lme(WBEING~HRS+LEAD+G.HRS,random=~1+LEAD|GRP)     ?
> Thank you very much.
>
> Best regards,
>
> YA
>
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