Hi there, The subset function is available on your Base R. So you need not to load any package. May be it is not working because I suppose that your "rownames" is a sequential one (1...4000). Case it is not true, the command will not work.
Anyway, I think that those line that are working find is simple than you use %in%... etc. Good luck, miltinho Brazil On 6/16/08, nmarti <[EMAIL PROTECTED]> wrote: > > > Thanks for all the replies. > My data frame is actually 4000 rows and 10 columns. > > This line, > df <- subset( df, !( rownames(df) %in% 1:25 ) ) Did not work for me. Is > there a certain library I need to load for this to work (I'm assuming there > isn't)? I didn't get an error message, warning, or anything; it just > didn't > work. > > These two lines did work, > df = df[ -c(1:25), ] Or, > df = df[ 26:200, ] I'm not sure why they didn't work the first time I > tried them. > > Once again, thanks for the help! > > > > milton ruser wrote: > > > > Hi there, > > > > I donĀ“t know if you are trying to solve the delete job or to test how > > functions work. > > > > If you really want to delete lines from a data.frame, try something like > > this. > > > > > > rowcount<-1:100 > > x<-runif(100) > > y<-runif(100) > > > > df<-data.frame(cbind(rowcount,x,y)) > > > > df.subset<-subset(df, !(rownames(df) %in% 1:25)) > > > > # ! (a condition) is the negation of the condition > > > > # so the output will be those lines that are not on interval 1:25 > > > > > > > > By the way, it is not a good idea to use "data" as a input argument on > > a function because "data" is a pre-defined function. > > Kind regards, > > > > miltinho > > > > > > > > On 6/15/08, nmarti <[EMAIL PROTECTED]> wrote: > >> > >> > >> I am trying to delete a section of rows from a data frame (based on no > >> condition). Lets say my data frame has 200 rows and I want to delete > >> rows > >> 1 > >> through 25. How would I do this? > >> > >> I know x[ -1, ] deletes the first row (or any desired row). I tried > >> using > >> different variations of this, like x[ -c(1:25), ] but that didn't work. > >> I > >> also tried writting a few functions, for example: > >> > >> deleteRows <- function( data, s, e, ) { > >> for( i in s:e ) > >> data[ -i, ] > >> } > >> deleteRows( ds, 1, 25 ) > >> > >> But that didn't work either, it only deleted row 25 (i'm new to writing > >> functions). > >> Any thoughts on how to solve my problem would be appreciated. > >> -- > >> View this message in context: > >> http://www.nabble.com/Delete-Block-of-Rows-tp17849775p17849775.html > >> Sent from the R help mailing list archive at Nabble.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. > >> > > > > [[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. > > > > > > -- > View this message in context: > http://www.nabble.com/Delete-Block-of-Rows-tp17849775p17865279.html > Sent from the R help mailing list archive at Nabble.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. > [[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.