Message-ID: <695EF58D-530F-46FE-B66B-7A18CE18CA12@comcast.net>
Date: 2011-01-24T04:30:32Z
From: David Winsemius
Subject: extract score vector and covariance matrix in glm package
In-Reply-To: <AANLkTimx8NVC2ABxgqX+vMJBeWRhET56j8P++nMUife3@mail.gmail.com>
On Jan 23, 2011, at 6:04 PM, Akram Khaleghei Ghosheh balagh wrote:
> Hello
> I am running a project but I encounter a problem . I would be happy
> to receive help :
> problem:
> I have a binary dependent variable and some covariates logit(y)=a+bx
> +cz .
> I want to estimate the score vectors and their covariance by the
> usage of
> logit function and so glm in R .The vlaue of one of the
> coefficient (
> like b) is known previously and I want to extract a and c and
> covariance
> matrix.
Several of your questions are answered on the help(glm) page (which
also has worked examples). Fixed coefficients are handle with the
offset arguments.
> How could I do it?
>
> Thanks;
>
> [[alternative HTML version deleted]]
>
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> and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT