Hi All.
I'm trying to run a simple model from Baayan, Davidson, & Bates and getting
a confusing error message. Any ideas what I'm doing wrong here?
# Here's the data.....
Subj <- factor(rep(1:3,each=6))
Item <- factor(rep(1:3,6))
SOA <- factor(rep(0:1,3,each=3))
RT <-
c(466,520,502,475,494,490,516,566,577,491,544,526,484,529,539,470,511,528)
priming <- data.frame(cbind(Subj,Item,SOA,RT))
str(priming)
'data.frame': 18 obs. of 4 variables:
$ Subj: num 1 1 1 1 1 1 2 2 2 2 ...
$ Item: num 1 2 3 1 2 3 1 2 3 1 ...
$ SOA : num 1 1 1 2 2 2 1 1 1 2 ...
$ RT : num 466 520 502 475 494 490 516 566 577 491 ...
#Here's the call taken directly from the paper
priming.lmer1 <- lmer(RT ~ SOA + (1 | Item) + (1 | Subj), data = priming)
#Here's the error....
Error in rbind(Item = <S4 object of class "dgCMatrix">, Subj = <S4 object of
class "dgCMatrix">) :
cannot coerce type S4 to list vector
Any idea what I'm doing wrong?
sessionInfo()
R version 2.5.0 (2007-04-23)
i386-pc-mingw32
other attached packages:
lme4 Matrix lattice nlme
"0.9975-13" "0.99875-1" "0.15-4" "3.1-80"
Rick DeShon
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