Hello,
Is it something like this that you want?
x <- data.frame(a = c(1:3, 5, 5:10), b = c(1:7, 7, 9:10))
y <- data.frame(a = 1:10, b = 1:10)
which(x != y, arr.ind = TRUE)
Hope this helps,
Rui Barradas
On 5/1/2018 11:35 AM, Chintanu wrote:
Hi,
May I please ask how I do the following in R. Sorry - this may be trivial,
but I am struggling here for this.
For two dataframes (A and B), I wish to identify (based on a primary
key-column present in both A & B) -
1. Which records (rows) of A did not match with B, and
2. Which records of B did not match with A ?
I came across a setdt function while browsing, but when I tried it, it says
- Could not find function "setdt".
Overall, if there is any way of doing it (preferably in some simplified
way), please advise.
Many thanks in advance.
regards,
Tito
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