Code scatter plot data from matrix with 3rd column
Your data is effectively unreadable. Please use dput() to supply sample data. Here is one way to do what you want for data frames using the ggplot2 package. library(ggplot2) mydata <- data.frame(x = 1:10, y = rnorm(10), z = c(rep(1,4), rep(2, 6))) ggplot(mydata, aes(x, y, colour= as.factor( z))) + geom_point() John Kane Kingston ON Canada
-----Original Message----- From: kbw1123 at yahoo.com Sent: Mon, 2 Jul 2012 13:31:36 -0700 (PDT) To: r-help at r-project.org Subject: [R] Code scatter plot data from matrix with 3rd column Hello I am looking for a simple way to plot my data from a matrix (or data frame) using a 3rd column as category to code the data points. for example: xyz 543240 104230 15901 203241 25781 3042340 357891 405670 45780 50531 Ideally, I'd like 0 or 1 to correspond to a color but I'd settle for a symbol at this point. I have tried working with pch but can't get it to work. Thanks Kat [[alternative HTML version deleted]]
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