On 02/05/2012 8:08 AM, marjolein post wrote:
Hi, I've been trying to convert numbers from an online temperature database into dates and time that R recognizes. I've tried as.Date, as.POSIXlt and strptime the problem is that the database has put a T between the numbers and R will not accept any conversions. currently it sees the date as a factor with the format as 1981-01-02T08:00I would like to keep only the year and month, but my primary focus is to get R to recognize it as a date.
To stop the conversion to factors, use argument stringsAsFactors=FALSE when you read the file, or even better, options(stringsAsFactors=FALSE) for a global change.
To convert a string, specify the format (following the instructions in ?strptime):
x <- "1981-01-02T08:00I" strptime(x, format="%Y-%m-%dT%H:%MI") Duncan Murdoch ______________________________________________ R-help@r-project.org 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.
