FWIW this code does not give me any warnings or errors on Solaris and
R 4.0.4 and the current CRAN version of metapack.
Gabor
On Thu, Feb 18, 2021 at 1:54 AM Daeyoung Lim <daeyoung....@uconn.edu> wrote:
>
> Hello,
>
> I have a package on CRAN called 'metapack' and received a message from
> Professor Ripley that the error must be resolved for the package to be
> safely retained in CRAN. I've encountered this error on R-CMD-check on
> GitHub but cannot replicate it on any of my local machines to save my life.
> The reproducible code snippet is as follows (I use Rcpp/RcppArmadillo):
>
> library(metapack)
> data("cholesterol")
> Outcome <- model.matrix(~ pldlc + phdlc + ptg, data = cholesterol)
> SD <- model.matrix(~ sdldl + sdhdl + sdtg, data = cholesterol)
> Trial <- cholesterol$Trial
> Treat <- cholesterol$trt
> Npt <- cholesterol$Npt
> XCovariate <- model.matrix(~ 0 + bldlc + bhdlc + btg + age + durat +
> white + male + dm, data = cholesterol)
> WCovariate <- model.matrix(~ trt, data = cholesterol)
>
> fmodel <- 1
> set.seed(2797542)
> fit <- bayes.parobs(Outcome, SD, XCovariate, WCovariate, Treat, Trial,
> Npt, fmodel, mcmc = list(ndiscard = 1, nskip = 1, nkeep = 1),
> scale_x = TRUE, group = cholesterol$onstat, verbose = FALSE)
>
> which gives me the following error:
>
> warning: chol(): given matrix is not symmetric error: chol():
> decomposition failed
>
> This can't be true because (1) it runs without problem on other machines,
> (2) every matrix that is Cholesky-decomposed is ensured to be symmetric
> through Sig = 0.5 * (Sig + Sig.t());. Even with Sig = arma::symmatu(Sig)
> doesn't seem to guarantee symmetry.
>
> Has anyone encountered something similar to this?
> Thank you for your time.
>
> *Daeyoung Lim, MS*
>
> Ph.D. Student
>
> Department of Statistics
>
> University of Connecticut
>
> Philip E. Austin, <https://goo.gl/maps/HsS7bzAMgCw>215 Glenbrook Road
> <https://goo.gl/maps/HsS7bzAMgCw>
>
> Storrs Mansfield, CT 06269-4120 <https://goo.gl/maps/HsS7bzAMgCw>
>
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>
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