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I have two data frames, one contains numbers, and the second is binary, both are the same size. I would now like to replace all numbers in data frame A with NA if the corresponding variable in data frame B is 0 and not 1. If it is 1 the number should remain unchanged.
How do I go about that?
df A
A B C
1 34 32 12
2 52 23 34
df B
A B C
1 1 1 1
2 0 0 1
desired result
A B C
1 34 32 12
2 na na 34
If you’re working with matrices, it’s as simple as
mat1[which(mat2 == 0)] <- NA.