well, for a simple stripchart (i.e., default method) you can use
something like the following:
x <- rnorm(9)
cl <- c(1,1,1,2,2,2,3,3,3)
plot(range(x), c(0, 1), type = "n", yaxt = "n", ann = FALSE)
points(x, rep(0.5, length(x)), pch = cl)
I hope it helps.
Best,
Dimitris
Sam Player wrote:
If I have a dataset grouped into 3 classes, how can I construct a
stripchart where the markers are different for each class, e.g. a cross
for 1, square for 2 and circle for 3. In the example below I try to
define the marker type by the class but this only changes all the
markers from the default squares into circles. I am assuming I need to
set pch as an argument in par but am unsure how to proceed.
data <- rnorm(9)
class <- c(1,1,1,2,2,2,3,3,3)
x <- data.frame(data,class)
stripchart(x[,1], pch=x[,2])
Thanks,
Sam.
______________________________________________
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.
--
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus Medical Center
Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands
Tel: +31/(0)10/7043478
Fax: +31/(0)10/7043014
______________________________________________
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.
