Yes£¬I find out later.
rev is only reverse the order. What I use is ! Thanks At 2012-01-06 16:07:11,"Petr PIKAL" <petr.pi...@precheza.cz> wrote: >Hi > >> [R] question about rev >> >> Hi,all: >> I have a vector,and wanna get the opposite value via rev function. >> >> >> > a >> [1] FALSE FALSE TRUE TRUE TRUE >> > >> > rev(a) >> [1] TRUE TRUE TRUE FALSE FALSE >> > >> >> >> I don't know why the 3rd "TRUE" has not been reversed,while all other >> values are reversed? > >Misunderstanding what rev function does. > >see > >letters >rev(letters) >!a > >Regards >Petr > > >> >> >> >> >> Thanks >> >> >> My best >> [[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. > [[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.
