[R] NaN, Inf to NA

[Ian Gow]

> df$a[is.infinite(df$a) | is.nan(df$a) ] <- NA
> df
   a
1 NA
2 NA
3 NA
4  1
5  2
6  3


On 5/26/11 3:18 PM, "Albert-Jan Roskam" <fomcl at yahoo.com> wrote:

>Hi,
>
>I want to recode all Inf and NaN values to NA, but I;m surprised to see
>the 
>result of the following code. Could anybody enlighten me about this?
>
>> df <- data.frame(a=c(NA, NaN, Inf, 1:3))
>> df[is.infinite(df) | is.nan(df)] <- NA
>> df
>    a
>1  NA
>2 NaN
>3 Inf
>4   1
>5   2
>6   3
>> 
>
> 
>Thanks!
>
>Cheers!!
>Albert-Jan
>
>
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