Have you tried putting the a,b, and c column names you are passing in quotes
i.e. as strings? Currently your function is expecting separate objects with
those names.
The select function itself can accept unquoted column names, as can others in R,
because specific processing they do in the background. Your wrapper function
doesn?t have that facility. I have a very limited understanding of the details
to explain this but it is one of the ?gotchas? when starting.
No doubt others will point out that the approach you are using is probably not
the best (lacks flexibility; some column names are hard coded etc), but if it
gets the job done, to some extent that?s all that matters.
> On 14 May 2021, at 23:06, Kai Yang via R-help <r-help at
r-project.org> wrote:
>