Thanks for your help, and sorry for mis-posting.
JD
On Wed, Sep 25, 2013 at 3:18 AM, Matthew Dowle wrote:
> Very sorry to hear this bit you. If you need a copy of names before
> changing them by reference :
> oldnames <- copy(names(DT))
> This will be documented and it's on the bug list
Very sorry to hear this bit you. If you need a copy of names before
changing them by reference :
oldnames <- copy(names(DT))
This will be documented and it's on the bug list to do so. copy is
needed in other circumstances too, see ?copy.
More details here :
http://stackoverflow.com/q
I got bitten badly when a variable I created for the purpose of
recording an old set of names changed when I didn't think I was going
near it.
I'm not sure if this is a desired behaviour, or documented, or warned
about. I read the data.table intro and the FAQ, and also ?setnames.
Ben Bolker crea
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