Sarthi M. wrote: > > I want to display dates on my x-axis of the plot. > Dates are a problem. There's a standard for dates, but it seems that most users and software didn't catch up :-/
> The variable "dat" is a data frame. The first column has numeric > values and second column has date. > > e.g. dat > > [,1] dat[,2] > > [1,] 300 20060101 > [2,] 257 20060102 > [3,] 320 20060103 > [4,] 311 20060104 > [5,] 297 20060105 > [6,] 454 20060106 > [7,] 360 20060107 > [8,] 307 20060108 > .... > .... > > the command I am performing is:: > > plot(x=dat[1], y=as.character(dat[2])) > Hmmm... When I needed something similar, I did this day: y <- dat[,1] # because in a (xy) plot, x is the scale and y the data years <- floor(dat[,2] / 10000) months <- floor(dat[,2] / 100) %% 100 days <- dat[,2] %% 10000 x <- ISOdate(years, months, days) plot(x, y) > Kindly suggest some method by which I can perform my task of > displaying the first column values on y-axis against dates on x-axis. > Of course, you can combine all that into one line, but readability will be blown up: plot(ISOdate(floor(dat[,2] / 10000), floor(dat[,2] / 100) %% 100, dat[,2] %% 10000), dat[,1]) Alberto Monteiro ______________________________________________ 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 and provide commented, minimal, self-contained, reproducible code.