On Sat, Jan 30, 2010 at 12:39 PM, ATANU <ata.s...@gmail.com> wrote:
> how can i draw two regression curves in one graph??i can draw them seperately
> using scatter.smooth.but can"t adjust them in one single graph
Using the built in iris data frame:
library(lattice)
xyplot(Sepal.Length ~ Sepal.Width, iris, group = iris$Species, col =
1:3, type = c("p", "r"))
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