Re: [R] retrieving object name

From: Gabor Grothendieck <>
Date: Tue 11 Jul 2006 - 00:29:29 EST

Use drop = FALSE. For example using builtin data frame BOD we can display the Time column with its heading:

BOD[, "Time", drop = FALSE]

On 7/10/06, Laurent Deniau <> wrote:
> I have a data frame with named columns and I would like to know if it is
> possible to retrieve a column name once selected:
> print(colnames(df)) # assumes to print "col1" "col2"
>$col1) # would like to print "col1"
>$col2) # would like to print "col2"
> So what the function should do?
> My aim is not to print the column name but to select some settings from
> the column name withing the function (i.e., while this
> function is applied to several columns of the list/data.frame. Actually,
> I solved the problem by providing an extra parameter like:
>$col1, "col1")
> but since I may have many of these columns/parameters combination, this
> is rather error prone and it would be much better if I could detect
> which columns of the data frame I am dealing with.
> Thanks.
> ld.

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> mailing list PLEASE do read the posting guide! Received on Tue Jul 11 00:42:35 2006

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