Hi all,

I used both OpenBugs and R function bugs{R2WinBUGS} to run a linear mixed
effects model based on the same data set and initial values. I got the same
summary statistics but different posterior samples. However, if I order
these two sets of samples, one is generated from OpenBugs and the other is
generated from R, they turn to be the same. And the samples from R do not
have any autocorrelation. I do not know why and how this R function destroy
the orders of posterior samples. Have anyone ever met this situation
before? Any idea is appreciated.

Thanks,

Jia


> sessionInfo()R version 2.15.1 (2012-06-22)
Platform: x86_64-pc-mingw32/x64 (64-bit)

locale:
[1] LC_COLLATE=English_United States.1252  LC_CTYPE=English_United
States.1252
[3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C
[5] LC_TIME=English_United States.1252

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
[1] R2WinBUGS_2.1-18 BRugs_0.8-0      coda_0.15-2      lattice_0.20-6

loaded via a namespace (and not attached):
[1] grid_2.15.1  tools_2.15.1

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