Drawing asymmetric error bars
You can always roll your own with something like:
x1 <- c(4, 5, 7) x2 <- c(5, 6, 9) plot(c(1.5, 2.5), cbind(x1[2], x2[2]), xlab="", ylab="",
xlim=c(1, 3), ylim=c(0, 10), xaxt="n")
axis(1, at=1:2+.5, labels=c("Group 1", "Group 2"))
arrows(1.5, x1[2], 1.5, c(x1[1], x1[3]), angle=90, length=1/8)
arrows(2.5, x2[2], 2.5, c(x2[1], x2[3]), angle=90, length=1/8)
---------------------------------------------- David L Carlson Associate Professor of Anthropology Texas A&M University College Station, TX 77843-4352
-----Original Message----- From: r-help-bounces at r-project.org [mailto:r-help-bounces at r- project.org] On Behalf Of Alexandra Howe Sent: Thursday, September 27, 2012 5:59 AM To: r-help at r-project.org Subject: [R] Drawing asymmetric error bars Hello, I have data which I have arcsin transformed to analyse. I want to plot my data with error bars however as my data is back-transformed my standard errors are uneven. Is there a simple way to draw these asymmetric error bars in R? Thanks for your help. [[alternative HTML version deleted]]
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