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

[Peter Alspach]

One way ....

seq(test1)[-which(test1==test2)]

but I imagine there are better ones .....

Peter Alspach

-----Original Message-----
From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of baccts
Sent: Wednesday, 29 July 2015 8:26 a.m.
To: r-help at r-project.org
Subject: [R] indices of mismatch element in two vector with missing values

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!

Thanks in advance.






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