Dear R-users,
Is it possible to prevent xyplot from drawing empty panels when using
multiple conditions and when the dataset has a incomplete set of
condition combinations - like in the following example?
I have tried to modify the drop.unused.levels argument but without any
success.
Any help and suggestions will be appreciated.
Sebastien
####
df <- data.frame(id=c(1,1,2,2,1,1,3,3,4,4),
grp=c(1,1,1,1,2,2,2,2,2,2),
x=1:10,
y=1:10,
z=jitter(1:10))
xyplot(y+z~x|id*grp,
data=df,
type=c("p","l"),
distribute.type = T,
pch=3,
col=c(1,2),
xlab="x axis",
ylab="y axis")
####
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