On 11/10/2008 10:18 AM, Karl Knoblick 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?
Don't use subset. You can get what you want using
print(names(df[,group]))
Or alternatively, you can force group to be found in the right place in
this way:
e <- environment()
print(names(subset(df, select=e$group)))
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