Thanks for the tip!
Andrew
On Fri, Apr 9, 2010 at 8:04 PM, Gabor Grothendieck
wrote:
> Try this:
>
> suppressWarnings(as.numeric("A"))
>
> On Fri, Apr 9, 2010 at 7:22 PM, Andrew Yee wrote:
> > I'm interested in testing whether or not a character string is numeric or
> > not as follows:
> >
> >
2010 4:23 PM
To: r-h...@stat.math.ethz.ch
Subject: [R] using as.numeric() without generating warning message
I'm interested in testing whether or not a character string is numeric or
not as follows:
is.na(as.numeric('3')) # returns F
is.na(as.numeric('A')) # I'd like
Try this:
suppressWarnings(as.numeric("A"))
On Fri, Apr 9, 2010 at 7:22 PM, Andrew Yee wrote:
> I'm interested in testing whether or not a character string is numeric or
> not as follows:
>
> is.na(as.numeric('3')) # returns F
> is.na(as.numeric('A')) # I'd like this to return T without issuing
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Andrew Yee
Sent: Friday, April 09, 2010 4:23 PM
To: r-h...@stat.math.ethz.ch
Subject: [R] using as.numeric() without generating warning message
I'm interested in testing whether or not a character string is numer
I'm interested in testing whether or not a character string is numeric or
not as follows:
is.na(as.numeric('3')) # returns F
is.na(as.numeric('A')) # I'd like this to return T without issuing a warning
about NAs introduced by coercion.
I guess you could suppress the warning with options(warn=-1),
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