Titles on lattice colorkey
r-help.20.trevva wrote:
Dear R-ers,
I'm not sure if this is a missing feature, a support request, or stupidity
on my part, but nevertheless, its a question. Is it possible to add titles
to colorkey legends? As far as I can tell, there is a command to do it for
normal "key" legends, but not for "colorkeys".
eg it works for a normal key, created through auto.key
xyplot(decrease ~ treatment, OrchardSprays, groups = rowpos,
type = "a",
auto.key = list(space = "right", points = FALSE, lines =
TRUE,title="Key title"))
but there is no comparable command for a colorkey
x <- seq(pi/4, 5 * pi, length = 100)
y <- seq(pi/4, 5 * pi, length = 100)
r <- as.vector(sqrt(outer(x^2, y^2, "+")))
grid <- expand.grid(x=x, y=y)
grid$z <- cos(r^2) * exp(-r/(pi^3))
levelplot(z~x*y, grid, cuts = 50, scales=list(log="e"), xlab="",
ylab="", main="Weird Function", sub="with log scales",
region = TRUE,
colorkey = list(space="right",title="Doesn't work"))
Cheers,
Mark
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Maybe using library(grid) we can solve. Try
levelplot(z~x*y, grid, cuts = 50, scales=list(log="e"), xlab="",
ylab="", main="Weird Function", sub="with log scales",
region = TRUE,
colorkey=list(space="right", title="Doesn't work"),
legend=list(top=list(fun=grid::textGrob("Size\n(m)", x=1.09))))
Walmes Zeviani.
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