[R] NA's introduced by coercion

Steve Lianoglou lianoglou.steve at gene.com
Wed Aug 27 07:12:48 CEST 2014


On Tue, Aug 26, 2014 at 9:56 PM, madhvi.gupta <madhvi.gupta at orkash.com> wrote:
> Hi,
> I am applyin function as.numeric to a vector having many values as NA and it
> is giving :
> Warning message:
> NAs introduced by coercion
> Can anyone help me to know how to remove this warning and sor it out?

Let's say that the vector you are calling `as.numeric` over is called
`x`. If you could show us the output of the following command:

R> head(x[is.na(as.numeric(x))])

You'll see why you are getting the warning.

How you choose to sort it out probably depends on what you are trying
to do with your data after you convert it to a "numeric"


Steve Lianoglou
Computational Biologist

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