xyplot - show values of a series on graph

Thank you very much for your help. I tried to use lattice but I'm  
not sure
how to restrict it to display only the values of "cars".

xyplot(cars+trucks~year, data=df2, type="o",
panel=function(x,y,...){
	panel.xyplot(x,y,...)
	grid.text(unit(x,"native"),unit(y,"native"),label=y, just="top")}
  )



baptiste auguie-2 wrote:

with ggplot2,

d <- melt(df2,id="year")
qplot(year,value,data=d,colour=variable,geom=c("line","point")) +
geom_text(data= subset(d, variable == "cars"), aes(label=value))


with lattice, my best guess would be to use grid.text in a custom
panel function.


Hope this helps,

baptiste

On 8 Apr 2009, at 19:40, taz9 wrote:

Hi All,

I have a very simple graph:

cars <- c(1, 3, 6, 4, 9)
trucks <- c(2, 5, 4, 5, 12)
year <- c(2004, 2005, 2006, 2007, 2008)
df2<-data.frame(cars,trucks,year)
xyplot(cars+trucks~year, data=df2, type="o")

I need to show the values of "cars" on the graph. How can I do this?

Thanks.

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