Philipp Rappold wrote:
>
> Sorry guys, but I have another one:
>
>
> I want to write a function that returns a certain column of a
> dataframe. The function accepts two argument: the dataframe and the
> name of the column, but the column is not given as a "string" but as
> a variable name.
>
> k <- function(df, col) df[col]
>
>
You can do this by using deparse(substitute()) to coerce the variable to a
character string:
k <- function(df, col){
return( df[ deparse(substitute(col)) ] )
}
testData <- data.frame( foo = 1:3, bar = LETTERS[1:3] )
k( testData, bar )
bar
1 A
2 B
3 C
Hope this helps!
-Charlie
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