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dupret
2006 Nov 23
1
loess lines in xyplot with two or more variables on the left side of a formula
Hello:
I recall something like this being discuss recently, but I can't seem
to locate an example in the archives. I have data like the following:
df <- expand.grid(1:4, 1992:2002)
names(df) <- c("MSA", "YEAR")
df$IDUPREV <- runif(44)
df$VALIDAT <- rnorm(44)
I want to create an xyplot() with separate loess lines for each series
(IDUPREV and VALIDAT) in the same panel. I'm able to plot each series
in the same panel like this:
library(lattice)
xyplot(IDUPREV + VALIDAT ~ YEAR | MSA, data = df,
pa...