The documentation for DateTime classes in R 2.3.0 says that limited arithmetic is available for both POSIXlt and POSIXct. It needs to make clear that POSIXlt can be converted to POSIXct without warning under arithmetic operations
EXAMPLE ISOdatetime(2003, 1, 1, 0, 0,0) -> dd as.POSIXlt(dd) -> dd ## set class of dd to POSIXlt dd+1 -> ee ## ee now has class POSIXct ______________________________________________ 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.
