Hi,
Be sure to take a look at the levelplot() function from the lattice
package. From the documentation of levelplot:
library(lattice)
x <- seq(pi/4, 5 * pi, length.out = 100)
y <- seq(pi/4, 5 * pi, length.out = 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",
colorkey = FALSE, region = TRUE)
cheers,
Paul
Josh wrote:
Hi,
I have three related variables (vectors) and would like to see their
distribution on a 2D plot of first two variables, having colors proportional
to the values from third variable. I could have done so by passing 3rd
variable to the color palette, but this would disrupt the relationship
information among them.
I am sure there has to be some way to do it, but I don't know how. Any help
in this direction will be appreciated.
thanks
jo
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University of Utrecht
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