Full_Name: Dale Barr
Version: 2.5.1 (patched)
OS: Ubuntu linux x86_64
Submission from: (NULL) (138.23.70.108)
When RMySQL is loaded in before lme4, the summary() function for lmer objects in
the lme4 packages produces the following error:
Error in printMer(object) : no slot of name "status" for this object of class
"table"
When RMySQL is loaded AFTER lme4, however, no such error arises. For example,
the following code gives the error:
> library(RMySQL)
Loading required package: DBI
> library(lme4)
Loading required package: Matrix
Loading required package: lattice
> data(sleepstudy)
> fm1 <- lmer(Reaction ~ Days + (Days|Subject), sleepstudy)
> summary(fm1)
Error in printMer(object) : no slot of name "status" for this object of class
"table"
Now, here is the exact same code except that lme4 is loaded before RMySQL. The
summary function works properly.
> library(lme4)
Loading required package: Matrix
Loading required package: lattice
library(RMySQL)> library(RMySQL)
Loading required package: DBI
> data(sleepstudy)
> fm1 <- lmer(Reaction ~ Days + (Days|Subject), sleepstudy)
> summary(fm1)
Linear mixed-effects model fit by REML
Formula: Reaction ~ Days + (Days | Subject)
Data: sleepstudy
AIC BIC logLik MLdeviance REMLdeviance
1754 1770 -871.8 1752 1744
Random effects:
Groups Name Variance Std.Dev. Corr
Subject (Intercept) 610.835 24.7151
Days 35.056 5.9208 0.067
Residual 655.066 25.5943
number of obs: 180, groups: Subject, 18
Fixed effects:
Estimate Std. Error t value
(Intercept) 251.405 6.820 36.86
Days 10.467 1.546 6.77
Correlation of Fixed Effects:
(Intr)
Days -0.137
MY SESSION INFO:
R version 2.5.1 RC (2007-06-22 r42030)
x86_64-unknown-linux-gnu
locale:
LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=en_US.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=C
attached base packages:
[1] "stats" "graphics" "grDevices" "utils" "datasets" "methods"
[7] "base"
other attached packages:
RMySQL DBI lme4 Matrix lattice
"0.6-0" "0.2-3" "0.99875-2" "0.99875-2" "0.15-11"
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