[R] NAs introduced by coercion warning?
Sundar Dorai-Raj
sundar.dorai-raj at pdf.com
Wed Feb 18 23:25:13 CET 2004
Jonathan Greenberg wrote:
> I'm running a decision tree on a large dataset, and I'm getting multiple
> instances of "NAs introduced by coercion" (> 50). What does this mean?
>
> --j
>
My guess would be you're trying to convert from character to numeric and
are unable to do so. As in,
> as.numeric("A")
[1] NA
Warning message:
NAs introduced by coercion
> as.numeric("1")
[1] 1
>
But without more information from you it's impossible to tell.
See the posting guide at
http://www.R-project.org/posting-guide.html
Regards,
Sundar
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