R help - Nov 2006 - Extracting the full coefficient matrix from a gls summary?

Hi,
I am trying to extract the coefficients matrix from a gls summary. 
Contrary to the lm function,  the command fit$coefficients returns 
only the estimates of the model, not the whole matrix including the 
std errors, the t and the p values.

example:
ctl <- c(4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14)
  trt <- c(4.81,4.17,4.41,3.59,5.87,3.83,6.03,4.89,4.32,4.69)
group <- gl(2,10,20, labels=c("Ctl","Trt"))
weight <- c(ctl, trt)
fitlm<-lm(weight~group)
summary(fitlm)$coefficients ### returns estimates, std errors, t 
values and Pr(>|t|)
fitgls<-gls(weight~group)
summary(fitgls)$coefficients  ### returns only the estimates.

I would like to be able to extract the whole coefficient matrix form 
the gls. Any ideas how I could do that ?

Thanks for the help,

Tifenn<http://www.marinemammal.org/MMRU/tiphaine.html>

	[[alternative HTML version deleted]]

> library(nlme)
> ctl <- c(4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14)
> trt <- c(4.81,4.17,4.41,3.59,5.87,3.83,6.03,4.89,4.32,4.69)
> group <- gl(2,10,20, labels = c("Ctl", "Trt"))
> weight <- c(ctl, trt)
> fitgls <- gls(weight ~ group)
> summary(fitgls)$tTable
             Value Std.Error   t-value      p-value
(Intercept)  5.032 0.2202177 22.850117 9.547128e-15
groupTrt    -0.371 0.3114349 -1.191260 2.490232e-01

Best,

Renaud

2006/11/10, Tiphaine Jeanniard Du Dot <dudot at
zoology.ubc.ca>:
> Hi,
> I am trying to extract the coefficients matrix from a gls summary.
> Contrary to the lm function,  the command fit$coefficients returns
> only the estimates of the model, not the whole matrix including the
> std errors, the t and the p values.
>
> example:
> ctl <- c(4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14)
>   trt <- c(4.81,4.17,4.41,3.59,5.87,3.83,6.03,4.89,4.32,4.69)
> group <- gl(2,10,20, labels=c("Ctl","Trt"))
> weight <- c(ctl, trt)
> fitlm<-lm(weight~group)
> summary(fitlm)$coefficients ### returns estimates, std errors, t
> values and Pr(>|t|)
> fitgls<-gls(weight~group)
> summary(fitgls)$coefficients  ### returns only the estimates.
>
> I would like to be able to extract the whole coefficient matrix form
> the gls. Any ideas how I could do that ?
>
> Thanks for the help,
>
> Tifenn<http://www.marinemammal.org/MMRU/tiphaine.html>
>
>         [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

-- 
Renaud LANCELOT
D?partement Elevage et M?decine V?t?rinaire (EMVT) du CIRAD
Directeur adjoint charg? des affaires scientifiques

CIRAD, Animal Production and Veterinary Medicine Department
Deputy director for scientific affairs

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