Dear R users, I have a .txt file of time series data from the middle of 1999 through to the end of 2012. There are two columns in the file, the first is a decimal date, the second is an atmospheric tracer value and looks like this:
Date APO 1999.47945560 -168.48 1999.47948410 -158.08 1999.47951270 -163.79 1999.47956990 -164.38 1999.47959850 -173.94 1999.47962700 -161.92 1999.47965560 -154.36 1999.47968420 -147.55 1999.47971280 -157.06 1999.47974140 -151.21 1999.47976990 -141.63 1999.47979850 -147.97 What I'd now like to do is write new .txt (or .csv) files based on the month of the year so that I have separate text files for Jan, Feb, Mar etc for each year 1999, 2000, 2001 etc. using either the write.table or write.csv function. Is there an easy way to do this in R? Google key word searches have not been fruitful and the only other way I can see to do this is "manually" in excel, which would take a long time. I'm hoping there's a neat bit of code to do this. Many thanks Thomas -- Thomas Barningham Centre for Ocean and Atmospheric Sciences School of Environmental Sciences University of East Anglia Norwich Research Park Norwich NR4 7TJ ______________________________________________ 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.
