Hi, Don MacQueen wrote: ... > At 1:56 PM +0100 12/7/06, [EMAIL PROTECTED] wrote: >> Hi, >> >> Matplot works with x being Date class but not POSIXt. Here is the >> example with R version 2.5.0 Under development (unstable) (2006-12-06 >> r40129) >> >> Example: >> >> x <- Sys.Date() - c(1:10) >> y <- cbind(1:10, 10:1) >> class(x) >> ## [1] "Date" >> matplot(x, y) >> >> x <- strptime(as.character(x), format="%Y-%m-%d") >> ## [1] "POSIXt" "POSIXlt" >> matplot(x, y) >> Error in matplot(x, y) : 'x' and 'y' must have only 1 or the same number >> of columns >> >> Additionally, matplot with x being Date class does not use apropriate >> annotation for x axis. > > This is very easy to obtain: > > # x is a Date object > matplot(x,y,xaxt='n') > axis.Date(1,x) > > or > > # x is a POSIXlt object > matplot( as.POSIXct(x), y,xaxt='n') > axis.POSIXct(1,x) > > So easy, in fact, that I personally would not expect R core to spend > time on it. One of the virtues of R is that the language is so rich that > little tweaks like this are often very easy.
Thank you Peter and Don for these insights. I see that changes would be far from trivial/tricky and as Don pointed out simple tweaks by the user can solve this. Thank you and sorry for inconvenience! Best wishes, Gregor ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
