Trying to replace NA with 1

Question

I have variable a in a dataset b

NA
NA
NA
53
53
NA

I want the output as

I tried

b$a1[i1] <- ifelse(b$a[i1]=="NA", 1,b$a[i1])

But it is not getting replace. Format of a is list

Use `is.na()` function for checking whether the value is NA or not — Kunal Puri, May 12 '16 at 09:02
I tried the above is.na(). It showing false for values but not showing true for NA — suresh, May 12 '16 at 09:05

score 3 · Answer 1 · answered May 12 '16 at 09:01

3

The answer you are looking for is

b$a[is.na(b$a)] <- 1

answered May 12 '16 at 09:01

ArunK

score 0 · Answer 2 · answered May 12 '16 at 09:04

0

We can use replace

 with(b, replace(a, is.na(a), 1))

answered May 12 '16 at 09:04

akrun

2 Answers2