Dear all, I am having an issue with displaying the dates on a plot with two ordinates (i.e. two differently scaled y-axes). Instead of dates appearing on the x-axis I am instead seeing a string of numbers (14460, 14465, 14470 and 14475).
example R code: library(plotrix) x.Left <- as.Date(c('2009-08-04', '2009-08-08', '2009-08-11', '2009-08-15', '2009-08-18'), format="%Y-%m-%d") x.Right <- as.Date(c('2009-08-05', '2009-08-09', '2009-08-12', '2009-08-16', '2009-08-19'), format="%Y-%m-%d") y.Left <- c(70.13, 75.1, 74.35, 78.9, 80.92) y.Right <- c(35, 45, 50, 47, 53) twoord.plot(x.Left, y.Left, x.Right, y.Right, xlab="Date", ylab="Trend 1", rylab="Trend 2", lwd=2, lcol='blue') Thanks in advance for any help, C.C. P.S. I am aware of the criticisms of these sort of graphs, but they are pretty. Also, they seem to be used a lot in meetings i've attended recently. Windows Vista > sessionInfo() R version 2.9.2 (2009-08-24) i386-pc-mingw32 locale: LC_COLLATE=English_United Kingdom.1252;LC_CTYPE=English_United Kingdom. 1252;LC_MONETARY=English_United Kingdom. 1252;LC_NUMERIC=C;LC_TIME=English_United Kingdom.1252 attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] plotrix_2.7 ______________________________________________ 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.