I believe that R incorrectly formats POSIXct types with fractional seconds. I submitted this via R-bugs as an enhancement request and got brushed off with \"we think the current behavior is correct --
I have written a function which, when provided a range of dates, the name of a particular day of the week and the occurrence of that day in a given month (for instance, the second Friday of each month
I have the character vector below a = c(\"2009-07-31 18:00:33\", \"2009-07开发者_如何学Go-31 18:00:38\", \"2009-07-31 18:00:43\",\"2009-07-31 18:00:49\", \"2009-08-01 01:58:49\", \"2009-08-01 01:53:1
加载中,请稍侯......