Take a look at section 3.3.6 qqmath http://www.his.sunderland.ac.uk/~cs0her/Statistics/UsingLatticeGraphicsInR.h tm
You need to create a panel function. See sections 2.5.2 and 2.5.3 in the second chapter of the Lattice book (http://dsarkar.fhcrc.org/lattice/book/chapter2.pdf) available on Deepayan Sarkar's webpage. This is a simple example modified from the example in the lattice package manual: qqmath(~ rnorm(100), panel = function(x, ...) { panel.qqmathline(x, ...) panel.qqmath(x, ...) }) ---------------------------------------------- David L Carlson Associate Professor of Anthropology Texas A&M University College Station, TX 77843-4352 > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- > project.org] On Behalf Of Rich Shepard > Sent: Tuesday, May 15, 2012 12:31 PM > To: r-help@r-project.org > Subject: [R] Lattice: Add abline to Single Value qqmath() Plot > > The data are not normally distributed when untransformed and I'm > trying > various transformations to see if any would be appropriate to use. The > lattice book (fig. 3.10) shows a 2-sample Q-Q plot with an abline but > the > code for the figure does not include the line. > > I'd appreciate a pointer to a reference on how to add an abline to a > one-sample qqmath() plot in lattice. > > Rich > > ______________________________________________ > 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. ______________________________________________ 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.
