[R] R crash

ONKELINX, Thierry Thierry.ONKELINX at inbo.be
Wed Apr 10 10:43:26 CEST 2013

Have a look at the warning in ?geepack::geeglm It should be mentioned in ?geepack::geese as well.

ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature and Forest
team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
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Thierry.Onkelinx op inbo.be

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-----Oorspronkelijk bericht-----
Van: r-help-bounces op r-project.org [mailto:r-help-bounces op r-project.org] Namens Tasnuva Tabassum
Verzonden: dinsdag 9 april 2013 20:41
Aan: R help
Onderwerp: [R] R crash

I have a generalized linear model to solve. I used package "geepack". When I use the correlation structure "unstructured", I get a messeage that- R GUI front-end has stopped working. Why this happens? What is the solution?
The r codes are as follows:
a$icr <- REL
pseudo <- pseudoci(time=a$TIME,event=a$icr,tmax=cutoffs)

#rearranging data
b <- NULL
 for(it in 1:length(pseudo$time)){
 b <- rbind(b,cbind(a,pseudo = pseudo$pseudo[[1]][,it],  tpseudo = pseudo$time[it],id=1:nrow(a)))  }  b <- b[order(b$id),]


fit3 <-  geese(pseudo ~ as.factor(AGE) + as.factor(WEIGHT) +
as.factor(HEIGHT) ,
data =b, id=id, jack = TRUE, scale.fix=TRUE, mean.link = "logit", corstr="unstructured")

#The results using the AJ variance estimate cbind(mean = round(fit3$beta,4), SD = round(sqrt(diag(fit3$vbeta.ajs)),4),
Z = round(fit3$beta/sqrt(diag(fit3$vbeta.ajs)),4),
PVal = round(2-2*pnorm(abs(fit3$beta/sqrt(diag(fit3$vbeta.ajs)))),4))

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