On Tue, Mar 13, 2012 at 12:20 PM, Haojie Yan <yhj...@googlemail.com> wrote: > Dear R-user, > > I have read a dataset from .csv file into R. This dataset includes one > column containing some data in 'date and time' format, e.g. 'dd/mm/yyyy > hh:mm'. > > These data were automatically read and saved as 'factor' in R. When I was > trying to produce some plots (such as time series) with the above 'date and > time' on x-axis, it caused some disodering problem, e.g. 1st of March 2012 > is in front of 10th of Feb. 2012 (if the data is from 10th Feb. 2012 to 1st > of March 2012). I understand that I might have to convert them from > 'factor' to 'date' first, so I tried using 'as.date'. But this method seems > only work for data in format of 'd/m/y' and no further option that allows > me to add hours and minutes. > > I checked online for other methods such as 'as.POSIX' and 'strptime' but > none of them seem to offer me a quick solution. > > Please note that the data I received is recorded every 10 minutes so they > are saved in the form of 'dd/mm/yyyy hh:mm', e.g. I only have data > measured up to 'minute' NOT to 'second'. Are there any direct solution > that I can solve this issue??
See Example 6 in the document Reading Data in zoo: http://cran.r-project.org/package=zoo -- Statistics & Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com ______________________________________________ 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.
