The handy function summary() doesn't work correctly with Date class objects:
> R.version.string [1] "R version 1.9.1, 2004-06-21" > b <- as.Date(c("2002-12-26", "2002-12-27", "2002-12-28", "2002-12-29", "2002-12-30")) > b [1] "2002-12-26" "2002-12-27" "2002-12-28" "2002-12-29" "2002-12-30" > summary(b) Min. 1st Qu. Median Mean 3rd Qu. Max. "2002-12-29" "2002-12-29" "2002-12-29" "2002-12-29" "2002-12-29" "2002-12-29" Scott Waichler Pacific Northwest National Laboratory Richland, WA 99352 USA [EMAIL PROTECTED] ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html