Hi Dorcas Nduati, Better place to discuss and ask for help about home work is discussion forum of that site.
It is one of recommendations is that: you should not post your homework on Rhelp or stackOverflow. On Wed, Jan 15, 2014 at 12:56 PM, arun <smartpink...@yahoo.com> wrote: > Hi,May be this helps: > set.seed(26) > dat1 <- data.frame(Col1= sample(c(NA,1:10),25,replace=TRUE),Col2=rnorm(25)) > subset(dat1,!is.na(Col1)) #subset based on non-missing values of first column > sum(is.na(dat1[,1]))#count missing values. > A.K. > > > > > > > > > On Wednesday, January 15, 2014 2:14 AM, Dorcas Nduati <dndu...@gmail.com> > wrote: > Hi, > > I don't want to cheat for Assignment Week 1 I calculated the answers using > microsoft excel. > > Please help me with extracting data, counting missing values in R software > will really be grateful. Don't want to be a liar. > > -- > Dorcas Nduati > PHPT Dept. > Room 111 > UoN > > Office:0202453621 Ext 27107 > Skype:dorcas.waithira.nduati > > [[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. > > > ______________________________________________ > 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. ______________________________________________ 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.
