[R] plot with abscissa in hours/weekdays
Hello, How can I use plot and have abscissa in hours say (20:00,22:00,00:00,02:00 etc) and also weekdays say (Mon, Tue, Wed, ...) ? Is there a command that I can put into plot(xvec,yvec...,axes=...) that would enable that? Thanks for help, Mark __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] plot with abscissa in hours/weekdays
Hi, You can use the axis() command. For example plot(xvec,yvec, xaxt=n) axis(side=1, labels=c(Mon, Tue), at=c(0,1)) The xaxt sets up the axis but does not plot it. And axis does the rest. Ritwik. Case Western Reserve University http://darwin.cwru.edu/~rsinha m p wrote: Hello, How can I use plot and have abscissa in hours say (20:00,22:00,00:00,02:00 etc) and also weekdays say (Mon, Tue, Wed, ...) ? Is there a command that I can put into plot(xvec,yvec...,axes=...) that would enable that? Thanks for help, Mark __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] plot with abscissa in hours/weekdays
On 5/15/06, m p [EMAIL PROTECTED] wrote: Hello, How can I use plot and have abscissa in hours say (20:00,22:00,00:00,02:00 etc) and also weekdays say (Mon, Tue, Wed, ...) ? Is there a command that I can put into plot(xvec,yvec...,axes=...) that would enable that? I assume these are two different questions: (1) hours and (2) weekdays. Here is some sample code. See R News 4/1 Help Desk article for more on dates. Hopefully this will give you the idea and you can use this as a base to make it even more sophisticated if you like. # 1. chron times class test data library(chron) x - times(0:23/24) y - (1:24)^2 # plot plot(x, y, xaxt = n) a - floor(24*min(x)):ceiling(24*max(x)) axis(1, a/24, a, cex.axis = 0.7) # 2. Date class test data library(chron) # need is.weekend from chron to create data xx - chron(1:100) xx - as.Date(xx[!is.weekend(xx)]) yy - seq(length(xx))^2 # plot marking Mondays on the x axis idx - 1:length(xx) plot(idx, yy, xaxt = n, type = l) is.monday - format(xx, %a) == Mon lab - format(xx[is.monday], %b %d) axis(1, which(is.monday), lab, cex.axis = 0.6, tcl = -0.6) axis(1, idx, FALSE, tcl = -0.4) __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
