I rather suspect you don't understand what it means to name an array. Consider this example:
> myvar <- 1:4> myvar [1] 1 2 3 4 > names(myvar) NULL > names(myvar) <- letters[1:4] > myvar a b c d 1 2 3 4 > names(myvar) [1] "a" "b" "c" "d" > as.numeric(names(myvar)) [1] NA NA NA NA Warning message: NAs introduced by coercion For sure, as.numeric(names(myVar1)) does not name the array. -Don -- Don MacQueen Lawrence Livermore National Laboratory 7000 East Ave., L-627 Livermore, CA 94550 925-423-1062 On 7/26/12 2:19 PM, "zz" <czh...@uams.edu> wrote: >Hello, > >I am using names function to name an array. >It works first time when I use *as.numeric(names(myVar1)* >However, at a place later, when I tried to use a very similar line of code >*as.numeric(names(myVar2)*, it always returned 'numeric(0)' (or if I only >type 'names(myVar2), it gave me NULL'. > >Both myVar1 and myVar2 are type of integer. The only difference that I >can >tell is where the names function are called in my code. > >Does anyone have an idea what may cause the problem? > >Thanks in advance. > > > >-- >View this message in context: >http://r.789695.n4.nabble.com/names-function-not-working-at-the-2nd-place- >in-a-program-tp4638004.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. ______________________________________________ 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.
