I would like to create a plot of y vs x with different treatments where the
points are actually the letter of the treatment. Here is the code:
A<-as.matrix(rnorm(10,10))
B<-as.matrix(rnorm(10,9.5))
C<-as.matrix(rnorm(10,10.5))
Y<-as.matrix(rnorm(30,13))
X<-rbind(A,B,C)
nA<-matrix("A",10,1)
nB<-matrix("B",10,1)
nC<-matrix("C",10,1)
TRT<-rbind(nA,nB,nC)
plot(X,Y)
xyplot(Y~X,groups = TRT)
The last plot colors the points by treatment, but it uses points, not the
letter for each treatment. Does anyone know how to do this? It seems simple
enough and I'm sure it is very easy, I just cannot figure it out nor have I
found the code. Thank you.
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Here's an example: x = c(1,2,3,4,5); y = rnorm(5); labels = LETTERS[1:5]; plot(x,y, type = "n") # This sets up the plot but doesn't actually plot the points text(x,y, labels) # This adds labels to positions (x,y) HTH, Peter On Tue, Feb 8, 2011 at 12:42 PM, Schatzi <adele_thompson at cargill.com> wrote:> > I would like to create a plot of y vs x with different treatments where the > points are actually the letter of the treatment. Here is the code: > > A<-as.matrix(rnorm(10,10)) > B<-as.matrix(rnorm(10,9.5)) > C<-as.matrix(rnorm(10,10.5)) > Y<-as.matrix(rnorm(30,13)) > X<-rbind(A,B,C) > nA<-matrix("A",10,1) > nB<-matrix("B",10,1) > nC<-matrix("C",10,1) > TRT<-rbind(nA,nB,nC) > > plot(X,Y) > xyplot(Y~X,groups = TRT) > > The last plot colors the points by treatment, but it uses points, not the > letter for each treatment. Does anyone know how to do this? It seems simple > enough and I'm sure it is very easy, I just cannot figure it out nor have I > found the code. Thank you. > > > -- > View this message in context: http://r.789695.n4.nabble.com/Plot-where-points-are-treatment-letter-tp3276751p3276751.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help at 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. >
On Feb 8, 2011, at 3:42 PM, Schatzi wrote:> > I would like to create a plot of y vs x with different treatments > where the > points are actually the letter of the treatment. Here is the code: > > A<-as.matrix(rnorm(10,10)) > B<-as.matrix(rnorm(10,9.5)) > C<-as.matrix(rnorm(10,10.5)) > Y<-as.matrix(rnorm(30,13)) > X<-rbind(A,B,C) > nA<-matrix("A",10,1) > nB<-matrix("B",10,1) > nC<-matrix("C",10,1) > TRT<-rbind(nA,nB,nC) > > plot(X,Y) > xyplot(Y~X,groups = TRT)?plot ?xyplot > plot(X,Y, pch=LETTERS[1:3], col=1:3) > xyplot(Y~X,groups = TRT, pch=LETTERS[1:3], col=1:3)> > The last plot colors the points by treatment, but it uses points, > not the > letter for each treatment. Does anyone know how to do this? It seems > simple > enough and I'm sure it is very easy, I just cannot figure it out nor > have I > found the code. Thank you. > > > -- > View this message in context: http://r.789695.n4.nabble.com/Plot-where-points-are-treatment-letter-tp3276751p3276751.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help at 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.David Winsemius, MD West Hartford, CT