[R] Quick recode of -999 to NA in R

[Clint Bowman]

Amen.  Ditto for "-999.000", "-999.00" and all of the other ones 
that various (usually Fortran) programmers have used.  Has the most 
recent Fortran standard come around to understanding NA?

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On Wed, 30 Mar 2011, peter dalgaard wrote:

>
> On Mar 30, 2011, at 16:05 , Christopher Desjardins wrote:
>
>>>
>>> dat0 <- read.table('tim1.dat', na = -999)
>>>
>>
>> Ah ... yes. I knew that but clearly didn't at the time of my question or
>> script writing.
>> Thanks,
>> Chris
>
> Depending on where your data came from, you could get caught by the fact that the above is really ...na.strings="-999"... and that is not going to work if the actual code is (say) -999.00.
>
> Another straightforward option is dat0[dat0 == -999] <- NA
>
>
>