[R] Using object.size inside a function

[Bos, Roger]

When I encounter memory errors, I like to see the size of the objects in
memory, so I modified one of the examples:

    z <- sapply(ls(), function(x) object.size(get(x)))
    as.matrix(rev(sort(z))[1:10])

This works fine if I run it as is, but if I try to place it inside a
function, I get an error (see below).  I tried using sort.list and
unlist, but I couldn't get it to work.  I don't understand why the
commands work by themselves but not in a function.  Its probably a
simple fix, can anyone enlighten me?

Thanks, Roger.

> "mysize" <- function() {
+     z <- sapply(ls(), function(x) object.size(get(x)))
+     as.matrix(rev(sort(z))[1:10])
+ }

> mysize()
Error in sort.list(z) : 'x' must be atomic for 'sort.list'
Have you called 'sort' on a list?
> 
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