Message-ID: <4FA1A53B.4010004@euros4click.de>
Date: 2012-05-02T21:20:59Z
From: Heiko Neuhaus
Subject: Problems accessing environment() in function
In-Reply-To: <4FA177C4.1090307@gmail.com>
Thank you very much for your suggestion.
> f <- function(a,b,c) {
> names <- ls(environment()) # get all the names
> result <- list()
> for (n in names) {
> if (!do.call(missing, list(as.name(n))))
> result[n] <- get(n)
> }
> result
> }
I have already figured out a very similar solution using for/eval that
basically does the same. I was hoping that I would somehow could get
around the ugly loop using a more elegant approach. The loop should have
a negative impact on performance since my function is using a lot of
parameters. I was hoping, that there was some flag to tell the as.list
function to ignore non existing objects. If that is not possible I will
have to accept this.
> If you put the ls() call later, you'll pick up other local variables
> (names, result, n) as well.
Of course. That is why I call it at the very first line of my function.
Thanks again!
Heiko Neuhaus