[R] ggplot adding points

ONKELINX, Thierry Thierry.ONKELINX at inbo.be
Fri Oct 10 16:39:48 CEST 2008

Dear Stephen,

You need the data in long format. Try melt()ing it first.

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)
zMelt <- melt.data.frame(z, id.vars = "River.Mile")
ggplot(zMelt, aes(x = River.Mile, y = value, colour = variable)) +



PS your example was not reproducible as you forgot library(lattice) in
your code.

ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
tel. + 32 54/436 185
Thierry.Onkelinx op inbo.be 

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-----Oorspronkelijk bericht-----
Van: r-help-bounces op r-project.org [mailto:r-help-bounces op r-project.org]
Namens stephen sefick
Verzonden: vrijdag 10 oktober 2008 16:18
Aan: R Help
Onderwerp: [R] ggplot adding points

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)

Stephen Sefick
Research Scientist
Southeastern Natural Sciences Academy

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods.  We are mammals, and have not exhausted the
annoying little problems of being mammals.


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