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

From: peter dalgaard <>
Date: Wed, 30 Mar 2011 17:51:15 +0200

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"-999"... and that is not going to work if the actual code is (say) -999.00.

Another straightforward option is dat0[dat0 == -999] <- NA

Peter Dalgaard
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email:  Priv:

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Received on Wed 30 Mar 2011 - 16:19:08 GMT

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