Forgot the name part. Try: TestFunc2 <- function(DF, group) names(DF[group]) TestFunc3 <- function(...) names(subset(..., subset = TRUE)) TestFunc4 <- function(...) eval.parent(names(subset(..., subset = TRUE)))
# e.g. df1 <- data.frame(group = "G1", visit = "V1", value = 0.9) TestFunc2(df1, c("group", "visit")) TestFunc3(df1, c("group", "visit")) TestFunc4(df1, c("group", "visit")) TestFunc4(df1, c(group, visit)) # this works too On Mon, Nov 10, 2008 at 10:43 AM, Gabor Grothendieck <[EMAIL PROTECTED]> wrote: > Here are a few things to try: > > TestFunc1 <- get("[") > > TestFunc2 <- function(DF, group) DF[group] > > TestFunc3 <- function(...) subset(..., subset = TRUE) > > > > On Mon, Nov 10, 2008 at 10:18 AM, Karl Knoblick <[EMAIL PROTECTED]> wrote: >> Hello! >> >> I have the problem that in my function the passed variable is not used, but >> the variable name of the dataframe itself - difficult to explain, but an >> easy example: >> >> TestFunc<-function(df, group) { >> print(names(subset(df, select=group))) >> } >> df1<-data.frame(group="G1", visit="V1", value=0.9) >> TestFunc(df1, c("group", "visit")) >> >> Result: >> [1] "group" >> >> But I expected and want to have [1] "group" "visit" as result! Does anybody >> know how to get this result? >> >> Thanks! >> Karl >> >> >> >> >> ______________________________________________ >> 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.