Hi:

Here's an example from the ggplot2 package using the Orthodont data from
Pinheiro & Bates (2000):

library(nlme)
library(ggplot2)

p <- ggplot(data = Orthodont, aes(x = age, y = distance, group = Subject,
                  colour = Sex))
p + geom_line()

?Orthodont          will give you some information about the data set.

See http://had.co.nz/ggplot2/ for more information about the package. Note
that the two packages
have to be installed from CRAN first before you can use them.

HTH,
Dennis

On Fri, May 14, 2010 at 9:52 AM, Jack Monpas-Huber <
jack.monpas.huber@shorelineschools.org> wrote:

> Greetings,
>
> I am new to R.  Right now I'm most interested in the spaghetti plots
> of achievement over time by student ID associated with longitudinal
> analysis.  How can I do a spaghetti plot of all students, but color
> the lines by group membership such as gender or race, and indicate
> this color scheme in the legend?  Any advice would be much appreciated.
>
> Jack
>
> Jack B. Monpas-Huber, Ph.D.
> Director of Assessment & Student Information
> Shoreline Public Schools
> 18560 1st Ave NE
> Shoreline, WA 98155
> (206) 368-4774 Office
> (206) 947-9926 Cell
> Shoreline Assessment Web site
> My Web site
>
>
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>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

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