Re: [R] plot and factors
On 12/2/05, Jason Miller <[EMAIL PROTECTED]> 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.)
Here are some possibilities using the lattice package:
library(lattice)
d <-
data.frame(Year = factor(rep(2000:2004, each = 3)),
Semester = gl(3, 1, 15,
labels = c("Fall", "Spring", "Summer")),
val = sort(rnorm(15)))
xyplot(val ~ Year, d, groups = Semester,
type = 'o', auto.key = TRUE)
xyplot(val ~ Year:Semester, d,
scales = list(x = list(rot = 90)))
dotplot(Year:Semester ~ val, d)
dotplot(Semester ~ val | Year, d,
layout = c(1, 5))
HTH,
-Deepayan
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Re: [R] plot and factors
Your first question seems relatively simple: data.fall<-subset(data,semester=='fall') data.spring<-subset(data,semester=='spring') data.summer<-subset(data,semester=='summer') plot(x=year,y=value1,data=data.fall) lines(x=year,y=value1,data=data.spring) lines(x=year,y=value1,data=data.summer) As for the second question perhaps the paste command is the way to go datayearsem<-paste(data$year,data$semester,sep='.') 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 > > > Jason E. Miller, Ph.D. > Associate Professor of Mathematics > Truman State University > Kirksville, MO > http://pyrite.truman.edu/~millerj/ > 660.785.7430 > > __ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] plot and factors
Hi On 2 Dec 2005 at 6:40, Jason Miller wrote: To: r-help@stat.math.ethz.ch From: Jason Miller <[EMAIL PROTECTED]> Date sent: Fri, 2 Dec 2005 06:40:48 -0600 Subject:[R] plot and factors > 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)? Not sure what do you want to achieve. If x is factor you will get boxplots by plot(factor, data) so maybe stayinng with numeric and labeling with plot(year,data, axes=FALSE) axis(1, ) can be what you want. > > 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.) Try to look at ?interaction, maybe this can help you. HTH Petr > > Again, thanks for whatever pointers people can share. > > Jason > > > Jason E. Miller, Ph.D. > Associate Professor of Mathematics > Truman State University > Kirksville, MO > http://pyrite.truman.edu/~millerj/ > 660.785.7430 > > __ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html Petr Pikal [EMAIL PROTECTED] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
