On Fri, Dec 17, 2010 at 12:07 AM, Rajarshi Guha <rajarshi.g...@gmail.com> wrote: > On Thu, Dec 16, 2010 at 11:26 PM, David Winsemius > <dwinsem...@comcast.net> wrote: >> >> On Dec 16, 2010, at 11:12 PM, Rajarshi Guha wrote: >> >>> Hi, I have a series of lattice plots which I am arranging in a 2x2 >>> grid via print: >>> >>> print(p.preds, split=c(1,1, 2,2), more=TRUE) >>> print(p.comp, split=c(2,1,2,2), more=TRUE) >>> print(p.bw, split=c(1,2,2,2), more=FALSE) >>> >>> What I'd like to have is a letter (A, B, ...) in the top corner of >>> each plot. While panel.text lets me add text anywhere within a plot, I >>> can't seem to workout how I could put some text in the top left >>> corner, say, of the whole plotting region. >> ########>>>>>>>>> >>> >>> and provide commented, minimal, self-contained, reproducible code. > > Apologies for an incomplete post. Example code, based on Gabors suggestion is > > library(gridExtra) > p1 <- xyplot(demand ~ Time, BOD) > p2 <- xyplot(demand ~ Time, BOD) > p3 <- xyplot(demand ~ Time, BOD) > print(p1, split=c(1,1,2,2), more=TRUE) > print(p2, split=c(2,1,2,2), more=TRUE) > print(p3, split=c(1,2,2,2), more=FALSE) > > However, Gabors approach places the mark within the plot itself. What > I'd ideally like is to have the mark be located in the margins, in the > top right corner. (I am not sure of the correct terminology here). An > example of the desired output can be seen at > http://rguha.net/plot-annot.png
In that case use page= rather than panel=. Unfortunately page only passes the page number but we can wrap it in a proto object from the proto package to get the desired effect: library(gridExtra) library(proto) pg <- function(., n) grid.text(label = mark, just = c("left", "center"), x = unit(0.1, "npc"), y = unit(0.9, "npc")) fo <- demand ~ Time grid.arrange(nrow = 2, xyplot(fo, BOD, page = proto(mark = "A", pg = pg)$pg), xyplot(fo, BOD, page = proto(mark = "B", pg = pg)$pg), xyplot(fo, BOD, page = proto(mark = "C", pg = pg)$pg) ) -- Statistics & Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com ______________________________________________ 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.