From ripley at stats.ox.ac.uk  Wed Oct  6 18:29:13 2004
From: ripley at stats.ox.ac.uk (Prof Brian Ripley)
Date: Wed Oct  6 18:29:19 2004
Subject: [Rd] R2.0.0 bug in function vcov in library survival (PR#7266)
In-Reply-To: <20041006160456.19459EABC@slim.kubism.ku.dk>
Message-ID: <Pine.LNX.4.44.0410061725330.564-100000@gannet.stats>

Those vcov methods were removed from stats at

2004-08-28 20:40:13 +0100 survival now has vcov.{coxph,survreg}

Looks like they have been removed from survival since: that is where they 
should be.  They are very simple --

vcov.coxph <- vcov.survreg <- function (object, ...) object$var

On Wed, 6 Oct 2004 svensmail@spray.se wrote:

> Full_Name: Sven Sandin
> Version: 2.0.0
> OS: SuSE Linux 9.0
> Submission from: (NULL) (81.227.17.135)
> 
> 
> Have just compiled and installed R-2.0.0.tar.gz running SuSE9.0.
> 
> The function vcov do not accept "coxph" object as input any longer.
> 
> The same R-program running R1.9.1 do work. R-program attached below.
> 
> Exporting the coxph object from R2.0.0 to R1.9.1 I get vcov ouput in R1.9.1.
> Exporting the coxph object from R1.9.1 to R2.0.0 I get errors in R2.0.0
> 
> =========== Copy of the R-program =======================
> R : Copyright 2004, The R Foundation for Statistical Computing
> Version 2.0.0  (2004-10-04), ISBN 3-900051-07-0
> 
> R is free software and comes with ABSOLUTELY NO WARRANTY.
> You are welcome to redistribute it under certain conditions.
> Type 'license()' or 'licence()' for distribution details.
> 
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> Type 'demo()' for some demos, 'help()' for on-line help, or
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> Type 'q()' to quit R.
> 
> [Previously saved workspace restored]
> 
> > rm(list=ls())
> > load("~/R/wlh0301/data/breast.RData")
> > library(survival)
> Loading required package: splines
> > u2<-coxph(Surv(time,event) ~ age + cbmi + smoker + drink , data=breast.1)
> > tmp <- vcov(u2)
> Error in vcov(u2) : no applicable method for "vcov"
> >
> > class(u2)
> [1] "coxph"
> 
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-- 
Brian D. Ripley,                  ripley@stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595


[Rd] R2.0.0 bug in function vcov in library survival (PR#7266)
Prof Brian Ripley