John Kane wrote:
Perhaps
testdata$onecolumn[testdata$onecolumn==NA] <- 9999
Well, with is.na() there is a much better chance to make it work
Uwe Ligges
--- On Mon, 8/17/09, Steve Murray <smurray...@hotmail.com> wrote:
From: Steve Murray <smurray...@hotmail.com>
Subject: [R] Replacing NA values in one column of a data.frame
To: r-help@r-project.org
Received: Monday, August 17, 2009, 11:41 AM
Dear all,
I'm trying to replace NA values with -9999 in one column of
a data frame. I've tried using is.na and the
testdata[testdata$onecolumn==NA] <- 9999 approach, but
whilst neither generate errors, neither result in -9999s
appearing - the NAs remain there!
I'd be grateful for any advice on what I'm doing wrong or
any other suitable approaches.
Many thanks,
Steve
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