How do I replace NA values with zeros in an R dataframe?

Question

How to replace the values of NA with zeros in some column and data frame I have?

Answer 1

You can also use norm package as it has a lot of nice features for the missing data analysis and there’s no need to use apply .

For Reference check the following example:

> m <- matrix(sample(c(NA, 1:2), 100, replace = TRUE), 2)

> d <- as.data.frame(m)

 V1 V2 V3 V4 V5 V6 V7 V8 V9 V10

1  4  3 NA  3  7  6  6 10  6   5

2  9  8  9  5 10  NA 2  1  7   2

> d[is.na(d)] <- 0

> d

  V1 V2 V3 V4 V5 V6 V7 V8 V9 V10

1   4  3  0  3  7  6  6 10  6   5

2   9  8  9  5 10  0  2  1  7   2

Comment for doubts. Cheers.