Dear R-users, I use unlist of POSIX dates to extract the year, hour etc. With that I can search for files in my database which are in the form 'yyyymmddhh_synops.txt' However, I get stucked during midnight where unlist just gives NA's. The script is given below, the problem accurs at acc.period[16] (midnight). However when I write out the character, unlist works well. But as.character(acc.period[16]) is not the solution....
begin=paste(dates[i]-1,"09:00:00") end=paste(dates[i],"08:00:00") acc.period=seq(as.POSIXct(begin),as.POSIXct(end),"hour") unlist(strptime(acc.period[16],format="%Y-%m-%d %H:%M:%S")) # sec min hour mday mon year wday yday isdst # NA NA NA NA NA NA NA NA -1 unlist(strptime(acc.period[17],format="%Y-%m-%d %H:%M:%S")) # sec min hour mday mon year wday yday isdst # 0 0 1 1 2 106 3 59 0 a="2006-03-01 00:00:00" unlist(strptime(a,format="%Y-%m-%d %H:%M:%S")) # sec min hour mday mon year wday yday isdst # 0 0 0 1 2 106 3 59 0 Could someone help? Thanks in advance! Hanneke -- --------------------------------------------- ir J.M. (Hanneke) Schuurmans PhD student Hydrology Department of Physical Geography Faculty of Geosciences - Universiteit Utrecht P.O. Box 80115 3508 TC Utrecht T +31 (0)30 2532988 F +31 (0)30 2531145 W www.geo.uu.nl/staff/schuurmans ______________________________________________ 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.
