Hi Arun and David
Thanks a lot for your reply and sorry for sending the csv file. (p.s. I can download my csv file from the email I sent, so I'm not sure why this doesn`t work for other users...) Anyway, below I used dput() and I am attaching the output from R: structure(list(V1 = c(532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 532703L, 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532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 532705L, 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summary of the data above into a table as below to show the days that there are any data available, e.g.value=1 if there are any data available for that day, otherwise value=0. There are three id in my data: 532703, 532704 and 532705. data are collected at 10 minutes interval each day (e.g. 144 observations for a day if no missing data). 28/04 29/04 30/04 01/05 02/05 532703 0 1 1 1 0 532704 1 1 1 1 1 532705 0 0 1 1 0 Sorry for the confusion to David, and hope this is clear now. Many thanks again. Best wishes, HJ On Thu, Sep 6, 2012 at 2:08 AM, arun <smartpink...@yahoo.com> wrote: > Hi, > > I couldn't find any attached data. Could you dput() the data? > A.K. > > > > ----- Original Message ----- > From: HJ YAN <yhj...@googlemail.com> > To: r-help@r-project.org > Cc: > Sent: Wednesday, September 5, 2012 7:57 PM > Subject: [R] Summarizing data containing data/time information (as factor) > > Dear R user > > I want to create a table (as below) to summarize the attached data > (Test.csv, which can be read into R by using 'read.csv(Test.csv, header=F)' > ), to indicate the day that there are any data available, e.g.value=1 if > there are any data available for that day, otherwise value=0. > > > 28/04 29/04 30/04 01/05 02/05 > 532703 0 1 1 1 0 > 532704 1 1 1 1 1 > 532705 0 0 1 1 0 > > Only Column A (Names: automatically stored as integer if being read into R) > and Column B (date/time: automatically stored as factor if being read into > R) are useful for this task. > > Could anyone kindly provide me some hints/ideas about how to write some > code to to this job please? > > > Many thanks in advance! > > Best wishes > HJ > > ______________________________________________ > 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. > > [[alternative HTML version deleted]] ______________________________________________ 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.