?vcov
________________________________
From: [EMAIL PROTECTED] on behalf of zhijie zhang
Sent: Thu 10/12/2006 9:56 AM
To: R-help@stat.math.ethz.ch
Subject: [R] how to get the variance-covariance matrix/information of alphaand
beta after fitting a GLMs?
Dear friends,
After fitting a generalized linear models ,i hope to get the variance of
alpha,variance of beta and their covariance, that is , the
variance-covariance matrix/information of alpha and beta , suppose *B* is
the object of GLMs, i use attributes(B) to look for the options ,but can't
find it, anybody knows how to get it?
> attributes(B)
$names
[1] "coefficients" "residuals" "fitted.values"
"effects"
[5] "R" "rank" "qr"
"family"
[9] "linear.predictors" "deviance" "aic" "
null.deviance"
[13] "iter" "weights" "prior.weights" "
df.residual"
[17] "df.null" "y" "converged"
"boundary"
[21] "model" "call" "formula"
"terms"
[25] "data" "offset" "control"
"method"
[29] "contrasts" "xlevels"
$class
[1] "glm" "lm"
I appreciate any help/suggestions.
--
With Kind Regards,
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Zhi Jie,Zhang ,PHD
Tel:86-21-54237149 [EMAIL PROTECTED]
Dept. of Epidemiology,school of public health,Fudan University
Address:No. 138 Yi Xue Yuan Road,Shanghai,China
Postcode:200032
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______________________________________________
R-help@stat.math.ethz.ch mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
