[R] indices of mismatch element in two vector with missing values

[Hervé Pagès]

Hi,

On 07/28/2015 01:25 PM, baccts wrote:
> How would you return the index where two vectors differs if they may contain
> missing (NA) values?
> For example:
> test1 <- c("1","2",NA);
> test2 <- c("1","2","3");
> which(test1!=test2) does not return 3!

which(test1 != test2 | is.na(test1) != is.na(test2))

Cheers,
H.

>
> Thanks in advance.
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-- 
Hervé Pagès

Program in Computational Biology
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