[R] merge question
Dr Eberhard W Lisse
el at lisse.na
Mon Jun 30 12:07:03 CEST 2014
I hear you.
But, after reflection, ie I looked at my situation again, it is great :-)-O
Sent from Dr Lisse's iPad mini
> On Jun 30, 2014, at 0:48, Rolf Turner <r.turner at auckland.ac.nz> wrote:
>> On 30/06/14 10:32, Dr Eberhard W Lisse wrote:
>> I then set NA to 0, and can do the sutraction,
> Not so great. I haven't gone through the issues underlying this post, but replacing NA by 0 will almost surely yield nonsense. "Missing" is ***not*** the same thing as "zero". Pretending that it is will have disastrous consequences. Think through what you are trying to do more clearly.
> Rolf Turner
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