Please reply all so the mailing list is included in the discussion. I don't do 1:1 tutoring and others can chime in if I make a mistake.
I would say you don't understand what my example did, since it doesn't care how many columns are in your data frame. If you are in fact working with a matrix, then convert it to a data frame. As for continuing to help you... you need to provide a minimal reproducible example with a small sample data set if what I showed you isn't helping. [1] http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example [2] http://adv-r.had.co.nz/Reproducibility.html On January 4, 2022 10:44:39 PM PST, Faheem Jan <faheemja...@yahoo.com> wrote: >I understand what you have done, it can easily apply in the case of vector >information mean each day having a single observation. But in my case I have >24 observations each day, I want to convert the matrix into two submatrices >for weekdays and the other for weekends. So please suggest to me anyway that >how I do this? > > On Wednesday, January 5, 2022, 11:10:34 AM GMT+5, Jeff Newmiller > <jdnew...@dcn.davis.ca.us> wrote: > > A lot of new R users fail to grasp what makes data frames more useful than > matrices, or use data frames without even realizing they are not using > matrices. > >This is important because there are more tools for manipulating data frames >than matrices. One tool is the split function... if you have a vector of >values identifying how each row should be identified you can give that to the >split function with your data frame and it will return a list of data frames >(2 in this case). > >v <- rep( 0:6, length=1826 ) >wkv <- ifelse( v < 5, "Weekday", "Weekend" ) >ans <- split( DF, wkv ) >ans$Weekday >ans$Weekend > >Note that this is a fragile technique for generating wkv though... usually >there will be a column of dates that can be used to generate wkv more >consistently if your data changes. > >Please read the Posting Guide... using formatted email can cause readers to >not see what you sent. Use plain text email format... it is a setting in your >email client. > >On January 4, 2022 7:52:34 PM PST, Faheem Jan via R-help ><r-help@r-project.org> wrote: >>I have data in a matrix form of order 1826*24 where 1826 represents the days >>and 24 hourly observations on each data. My objective is to split the matrix >>into working (Monday to Friday) and non-working (Saturday and Sunday) >>submatrices. Can anyone help me that how I will do that splitting using R? >> >> >> [[alternative HTML version deleted]] >> >>______________________________________________ >>R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >>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. > -- Sent from my phone. Please excuse my brevity. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
