Thanks David. Much appreciated.
-----Original Message----- From: David Winsemius [mailto:dwinsem...@comcast.net] Sent: August-06-14 2:31 PM To: Folkes, Michael Cc: r-help@r-project.org Subject: Re: [R] lattice scales format dates On Aug 6, 2014, at 1:11 PM, Folkes, Michael wrote: > Hello all, > > Based on the help in ?xyplot, Which says very little about barchart in particular but rather refers you to ?panel.barchart It's really designed expecting x to be a factor, > and this suggestion from another request: > > http://stackoverflow.com/questions/20623041/r-formatted-auto-scaling-d > at > e-axis-using-lattice > > I was under the impression that this code should give me the desired x > axis label date format of: "1911-Jan". Probably would have if you were using xyplot. But barchart's author assumed that the "x-axis" is a set of disjoint values and that's not really how datetimes are generally considered. Try this: barchart(var1~factor(format(date.val, "%Y-%b")), data=dat, horizontal=F, scales=list(x=list(rot=45) ) ) > > > > dat <- data.frame(var1=1:10, > date.val=as.POSIXct(seq(as.Date("1910/11/1"), as.Date("1911/8/1"), > "months") )) > > barchart(var1~date.val, data=dat, horizontal=F, > scales=list(x=list(rot=45, format="%Y-%b"))) > > format(dat$date.val,"%Y-%b") And learn to post in plain text. > > [[alternative HTML version deleted]] David Winsemius Alameda, CA, USA ______________________________________________ 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.
