On 07/28/2015 09:58 PM, Peter Alspach wrote:
One way ....
seq(test1)[-which(test1==test2)]
One question is whether 2 NAs should be considered to match or not.
The OP doesn't tell but I guess he wants them to match:
test1 <- c("1", "2", NA, "4", NA, "6")
test2 <- c("1", "2", "3", NA, NA, "66")
seq(test1)[-which(test1==test2)]
# [1] 3 4 5 6
5 should probably not be there!
H.
but I imagine there are better ones .....
Peter Alspach
-----Original Message-----
From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of baccts
Sent: Wednesday, 29 July 2015 8:26 a.m.
To: r-help@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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