[R] Error in gee.fit$working.correlation[1, 2] : subscript out of bounds
William Dunlap
wdun|@p @end|ng |rom t|bco@com
Fri Jun 5 18:52:32 CEST 2020
The usual reason for the 'subscript out of bounds' error is that an array's
subscripts exceed the dimensions of the array. In this case
gee.fit$working.correlation is a 1 by 1 matrix, so subscripting with [1,2]
will cause the error.
Here is a self-contained example that you can send the package's maintainer.
> maintainer("geesmv")
[1] "Zheng Li <zheng.li using outlook.com>"
> dx <- cbind(id=1:18, y=sin(1:18), expand.grid(period=c(1.1,1.2,1.3),
Ijt=c("i","ii","iii"))[c(1:9,1:9),])
> options(error=recover)
> test <- GEE.var.fg(y ~ factor(period) +
factor(Ijt),id="id",family=gaussian, dx,corstr="exchangeable")
Beginning Cgee S-function, @(#) geeformula.q 4.13 98/01/27
running glm to get initial regression estimate
(Intercept) factor(period)1.2 factor(period)1.3 factor(Ijt)ii
0.02712257 -0.06015777 -0.11555784 0.04243596
factor(Ijt)iii
0.04114518
Error in gee.fit$working.correlation[1, 2] : subscript out of bounds
Enter a frame number, or 0 to exit
1: GEE.var.fg(y ~ factor(period) + factor(Ijt), id = "id", family =
gaussian,
Selection: 1
Called from: top level
Browse[1]> str(gee.fit$working.correlation)
num [1, 1] 1
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Fri, Jun 5, 2020 at 12:28 AM Phat Chau <phat.chau using mail.utoronto.ca>
wrote:
> Hello,
>
> I have a dataframe in R that looks like the following
>
> cluster id period u_3 timeID startTrt Ijt error y
> 1: 1 1 0 -1.26 1 1 0 1.2015 17.809
> 2: 1 2 0 -1.26 1 1 0 -1.6577 14.950
> 3: 1 3 0 -1.26 1 1 0 -3.8639 12.744
> 4: 1 4 0 -1.26 1 1 0 1.4978 18.105
> 5: 1 5 0 -1.26 1 1 0 -5.3182 11.289
>
> When I try to run a gee model on it using the geesmv package which adjusts
> the variance covariance matrix for small sample sizes as follows
>
> test <- GEE.var.fg(y ~ factor(period) +
> factor(Ijt),id="id",family=gaussian, dx,corstr="exchangeable")
>
> I get this error message:
>
> Beginning Cgee S-function, @(#) geeformula.q 4.13 98/01/27
> running glm to get initial regression estimate
> (Intercept) factor(period)1 factor(period)2 factor(period)3
> factor(period)4 factor(period)5 factor(Ijt)1
> 17.25 -8.27 -6.47 -9.13
> -8.17 -11.89 8.96
> Error in gee.fit$working.correlation[1, 2] : subscript out of bounds
>
> I think the usual culprit for this kind of error message is that the
> variable being referred to (id in this case I assume) is non-existent. That
> is clearly not the case here and I checked to make sure it is it not a typo.
>
> Does anyone know why this is? How would I troubleshoot this?
>
> Thank you,
> Edward
>
>
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>
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