Hallo,
I'd like to add grid lines to a lattice graph having 2 series of Y data.
See these 2 examples:
data(iris)
[1]
xyplot(Sepal.Length + Sepal.Width ~ Petal.Length ,
data = iris, allow.multiple = TRUE, scales = "same",type="l",
)
[2]
xyplot(Sepal.Length + Sepal.Width ~ Petal.Length ,
data = iris, allow.multiple = TRUE, scales = "same",type="l",
panel = function(x, y) {
panel.grid(h=2, v= 3)
panel.xyplot(x, y)
}
)
Question: is it possible to keep all the formats of example [1] (colors,
type="l", ...), and just add the grids appearing in example 2.
Moreover I'd like to choose the color of the grid...
Thanks for you help,
Marc Mamin
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