Hi,
labs <- format(as.Date(time(rr)), "%b-%Y") #Error in as.Date.default(time(rr)) : # do not know how to convert 'time(rr)' to class “Date” #I guess this needs library(zoo) library(zoo) labs <- format(as.Date(time(rr)), "%b-%Y") sessionInfo() R version 3.0.0 (2013-04-03) Platform: x86_64-unknown-linux-gnu (64-bit) #or z<- zoo(rr) lab1<-as.yearmon(index(z)) plot(rr, xlab="2012 - 2013", ylab="event freq", xaxt = "n", col="blue") axis(1, time(rr), lab1, cex.axis = .9, tcl = -.5, las = 2) A.K. ----- Original Message ----- From: Rui Barradas <ruipbarra...@sapo.pt> To: Jerry <i89...@gmail.com> Cc: r-help@r-project.org Sent: Friday, April 26, 2013 5:25 AM Subject: Re: [R] time series plot: x-axis problem Hello, Try the following. (rr=ts(rr,start=c(2012,5),frequency=12)) plot(rr, xlab="2012 - 2013", ylab="event freq", xaxt = "n", col="blue") labs <- format(as.Date(time(rr)), "%b-%Y") axis(1, time(rr), labs, cex.axis = .9, tcl = -.5, las = 2) Hope this helps, Rui Barradas Em 25-04-2013 19:11, Jerry escreveu: > Hi, > > I'm trying to plot a simple time series. I'm running into an issue with > x-axis > > The codes below will produce a plot with correct x-axis showing from Jan to > Dec > >> rr=c(3,2,4,5,4,5,3,3,6,2,4,2) > >> (rr=ts(rr,start=c(2012,1),frequency=12)) > >> win.graph(width=6.5, height=2.5,pointsize=8) > >> plot(rr, xlab="2012", ylab="event freq", xaxt = "n", col="blue") > >> axis(1, time(rr), rep(substr(month.abb, 1, 3), length = length(rr)), > cex.axis = .9, tcl = -.5, las = 2) > > > However, if I change the start point from Jan 2012 to May 2012, which is > >> (rr=ts(rr,start=c(2012,5),frequency=12)) > > > Then run the codes below > >> plot(rr, xlab="2012 - 2013", ylab="event freq", xaxt = "n", col="blue") > >> axis(1, time(rr), rep(substr(month.abb, 1, 3), length = length(rr)), > cex.axis = .9, tcl = -.5, las = 2) > > > In the the new plot produced, x-axis is still showing from Jan to Dec, not > from May to April as I desired. > > How to fix x-axis? Is it possible to fix it WITHOUT modifying the object > "rr"? Also, ideally, I would like to have each time point on x-axis showing > month/year, not just month. How to do that? > > Any help and input will be much appreciated! > > Thanks > Jerry > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. ______________________________________________ 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.
