bwplot panels like stripplot
On Friday 24 September 2004 14:45, Waichler, Scott R wrote:
I would like to plot horizontal box-and-whisker plots in lattice
where
each factor has its own panel and scales are "free." Below is a stripplot version of what I have in mind. Substituting "bwplot" doesn't work.
This won't work (easily) with R <= 1.9.1. Try with 2.0.0 beta, and let
us know if you still have problems.
Deepayan
It still doesn't work. Once again,
R.version.string
[1] "R version 2.0.0, 2004-09-24"
x <- c(runif(100, 0, 1), runif(100, 1, 2), runif(100, 2, 3))
y <- c(rep("First", 100), rep("Second", 100), rep("Third", 100))
# this works fine
stripplot(x | y,
layout=c(1,3),
scales=list(relation="free"),
as.table=T,
bg="white"
)
# this doesn't
bwplot(x ~ y,
layout=c(1,3),
scales=list(relation="free"),
as.table=T,
bg="white",
horizontal=T
)
Error in Ops.unit(do.call("max", lab.unit), tick.unit) :
Both operands must be units
In addition: Warning messages:
1: x should be numeric in: bwplot(x ~ y, layout = c(1, 3), scales =
list(relation = "free"),
2: no finite arguments to max; returning -Inf
I'm completely confused.
First of all, your two calls are not comparable -- stripplot has the
`formula' x|y (which incidentally is undocumented and completely
unreliable), while bwplot has x ~ y.
Secondly, y is a character vector, which is inappropriate (you probably
want it to be a factor). You might still have expected it to work, but
to make things more complicated, horizontal=T, which means your 'x'
should be the factor, which makes your 'y' completely uninterpretable.
The bwplot equivalent of your stripplot call (with the formula changed
to a valid equivalent), namely
bwplot(~x | y,
layout=c(1,3),
scales=list(relation="free"),
as.table=T,
bg="white"
)
works as expected for me. I have no idea what you expect bg="white" to
achieve, though.
Deepayan