[R] 3 questions regarding matrix copy/shuffle/compares

David Winsemius dwinsemius at comcast.net
Sun Apr 26 17:35:56 CEST 2009


My understanding of the OP's request was for some sort of copy which  
did change when entries in the original were changed; the sort of  
behavior that might be seen  in a spreadsheet that had a copy "by  
reference".

On Apr 26, 2009, at 11:28 AM, hadley wickham wrote:

>>> I want to (1) create a deep copy of pop,
>>
>> I have already said *I* do not know how to create a "deep copy" in R.
>
> Creating a deep copy is easy, because all copies are "deep" copies.
> You need to try very hard to create a reference in R.
>
> Hadley
-- 

David Winsemius, MD
Heritage Laboratories
West Hartford, CT



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