[R] Names of objects passed as ... to a function?

From: Gavin Simpson <gavin.simpson_at_ucl.ac.uk>
Date: Sat, 23 Jun 2007 15:54:32 +0100

Dear list,

I have a function whose first argument is '...'. Each element of '...' is a data frame, and there will be at least 2 data frames in '...'. The function processes each of the data frames in '...' and returns a list, whose components are the processed data frames. I would like to name the components of this returned list with the names of the original data frames.

Normally I'd use deparse(substitute()) to do this, but here I do not know the appropriate argument to run deparse(substitute()) on, and doing this on ... only returns a single "name":

> foo <- function(...)

+                 deparse(substitute(...))

> dat1 <- rnorm(10)
> dat2 <- runif(10)
> foo(dat1, dat2)

[1] "dat1"

Can anyone suggest to me a way to get the names of objects passed as the ... argument of a function?


Gavin Simpson                     [t] +44 (0)20 7679 0522
ECRC                              [f] +44 (0)20 7679 0565
UCL Department of Geography
Pearson Building                  [e] gavin.simpsonATNOSPAMucl.ac.uk
Gower Street
London, UK                        [w] http://www.ucl.ac.uk/~ucfagls/
WC1E 6BT                          [w] http://www.freshwaters.org.uk/

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Received on Sat 23 Jun 2007 - 15:04:20 GMT

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