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

[Esmail]

  David Winsemius
> <dwinsemius at comcast.net> wrote:
>> 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".

You misunderstood (my phrasing wasn't probably the best), but I was
clear about wanting two independent copies.

 From my earlier post:

(1) If I did

     keep_pop[1:POP_SIZE] = pop[1:POP_SIZE]

     to keep a copy of the original data structure before manipulating
     'pop' potentially, would this make a deep copy or just shallow? Ie
     if I change something in 'pop' would it be reflected in 'keep_pop'
     too? (I don't think so, but just wanted to check). I would like
     two independent copies.

Regardless, the net outcome was new knowledge, so this is a good outcome.

Esmail