[R] ggplot adding points

[hadley wickham]

On Fri, Oct 10, 2008 at 9:18 AM, stephen sefick <ssefick at gmail.com> wrote:
> I would like to do the following in ggplot:
> what am I missing?
>
> River.Mile <-c(202, 198, 190, 185, 179, 148, 119, 61)
> TSS <- c(1:8)
> DOC <- seq(2, by= 0.6, length.out=8)
> z <- data.frame(River.Mile, TSS, DOC)
> xyplot(TSS+DOC~River.Mile, data=z, auto.key=TRUE)

You need to do the data manipulation yourself.  The easiest way is to use melt:

zm <- melt(z, id = "River.Mile")
qplot(River.Mile, value, data=dz, colour = variable)

Hadley

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