Jason Horn wrote: > Sorry to ask such a simple question, but I can't find the answer after > extensive searching the docs and the web. > > How do you remove a component from a list? For example say you have: > > lst<-c(5,6,7,8,9) > > How do you remove, for example, the third component in the list?
Is the object lst really a list? Try is.list(lst) to check. To remove an element from a vector, use for example, lst[-3] > > lst[[3]]]<-NULL generates an error: "Error: more elements supplied > than there are to replace" > > If lst were actually a list, that command would work with the obvious syntax fix. So would lst[-3] though. > > Also, how do you remove a row from a data frame? For example, say you > have: > > lst1<-c(1,2,3,4,5) > lst2<-c(6,7,8,9,10) > frame<-data.frame(lst1,lst2) > > How do you remove, for example, the second row of frame? You use frame[-2, ] #remove second row, keep all columns. > > Thanks, > > - Jason > > ______________________________________________ > R-help@stat.math.ethz.ch 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@stat.math.ethz.ch 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.
