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List:       r-sig-mixed-models
Subject:    Re: [R-sig-ME] Extracting significance for fixed effect
From:       Dieter Menne <dieter.menne () menne-biomed ! de>
Date:       2007-12-06 14:20:54
Message-ID: loom.20071206T141457-13 () post ! gmane ! org
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Rob Forsyth <r.j.forsyth@...> writes:

> 
> A hopefully simple query. I have an nlme model based on the SSlogis()  
> function in which I am testing for a fixed effect of GROUP on xmid. I  
> can see the p value of xmid.GROUP in the summary() but what is the  
> syntax to extract this as a variable for further use?
> 

library(nlme)
fm1Soy.lis <- nlsList(weight ~ SSlogis(Time, Asym, xmid, scal),
                       data = Soybean)
fm1Soy.nlme <- nlme(fm1Soy.lis)
# Dear Nikolaus, I wish future versions to have a nice 
# extractor function for the following.
fm1Soy.tab = summary(fm1Soy.nlme)$tTable

... and I leave it as an easy exercise to extract the wanted from fm1Soy.tab.

Note that this is a developer list for a future version of lme(x); for nlme you
usually should contact r-help. And next time, please supply an example such as
the above to make life easier, which will increase the chances to get a response.


Dieter

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