[R] plot and factors
tom at maladmin.com
Tue Dec 6 13:08:57 CET 2005
Your first question seems relatively simple:
As for the second question perhaps the paste command is the way to go
On Fri, 2005-02-12 at 06:40 -0600, Jason Miller wrote:
> Read R-helpers,
> I'm relatively new to R and trying to jump in feet first. I've been
> able to learn a lot from on-line and printed documentation, but
> here's one question to which I can't find an answer. Well, it's a
> question with a couple parts. Thanks in advance for any direction
> (partial or complete) that anyone can provide.
> I have a data frame with three columns: Year, Semester, value1. I
> want to treat Year and Semester as factors; there are many years, and
> there are three semesters (Fall, Spring, Summer).
> First, I would like to be able to plot the data in this frame as Year
> v. value with one curve for each factor. I have been unable to do
> this. Is there any built-in R functionality that makes this easy, or
> do I need to build this by hand (e.g., using the techniques in FAQ
> 5.11 or 5.29)?
> Second, I would like to be able to plot the values against a doubly
> labeled axis that uses Year and Semester (three Semester ticks per
> Year). Is there a relatively straightforward way to do this?
> (What's happening, of course, is that I'd like to treat Year+Semester
> as a single factor for the purpose of marking the axis, but I'm not
> sure how to do that, either.)
> Again, thanks for whatever pointers people can share.
> Jason E. Miller, Ph.D.
> Associate Professor of Mathematics
> Truman State University
> Kirksville, MO
> R-help at stat.math.ethz.ch mailing list
> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
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