Message-ID: <0IGM00JE2EJFU4K2@vms042.mailsrvcs.net>
Date: 2005-05-17T06:11:38Z
From: Daniel Nordlund
Subject: NA erase your data trick
In-Reply-To: <Pine.LNX.4.58.0505170134070.5648@ls02.fas.harvard.edu>
> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at stat.math.ethz.ch]
> On Behalf Of Anders Schwartz Corr
> Sent: Monday, May 16, 2005 10:38 PM
> To: r-help at stat.math.ethz.ch
> Subject: [R] NA erase your data trick
>
>
> Oops,
>
> I just erased all my data using this gizmo that I thought would replace -9
> with NA.
>
> A) Can I get my tcn5 back?
I don't think there is any going back.
>
> B) How do I do it right next time, I learned my lesson, I'll never do it
> again, I promise!
>
How about something like
x[x == -9] <- NA
Dan Nordlund
Bothell, WA
> Anders Corr
>
> > for(i in 1:dim(tcn5)[2]){ ##for the number of columns
> + for(n in 1:dim(tcn5)[1]){ ##for the number of rows
> + tcn5[is.na(tcn5[n,i]) | tcn5[n,i] == -9] <- NA
> +
> + }
> + }
> >
>
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