On Wed, Mar 30, 2011 at 10:51 AM, peter dalgaard <pdalgd@gmail.com> 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
>
>
Thanks Peter. That way does work well too and it does what I need.
Chris


>
> --
> Peter Dalgaard
> Center for Statistics, Copenhagen Business School
> Solbjerg Plads 3, 2000 Frederiksberg, Denmark
> Phone: (+45)38153501
> Email: pd.mes@cbs.dk  Priv: PDalgd@gmail.com
>
>

	[[alternative HTML version deleted]]

