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Re: Problem with "NA"
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From: |
Jordi Gutiérrez Hermoso |
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Subject: |
Re: Problem with "NA" |
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Date: |
Wed, 20 Feb 2013 09:15:31 -0500 |
On 19 February 2013 22:56, Stephen Montgomery-Smith
<address@hidden> wrote:
> I think that a much more likely source of creating NA is in evaluating
> the right hand side function. That is, you are solving:
You should never be getting NA unless you specifically requested it,
not unless you've stumbled upon a great coincidence.
NA is a NaN with a special bit-pattern, modelled on R's own NA. It may
be read in from data that is already in the NA form, but you should
never do computations with ordinary floats and get an NA. If you do,
we have a bug.
- Jordi G. H.