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

Question

I have a data frame and some columns have NA values.

How do I replace these NA values with zeroes?

Answer 1

More general approach of using replace() in matrix or vector to replace NA to 0

For example:

> x <- c(1,2,NA,NA,1,1)
> x1 <- replace(x,is.na(x),0)
> x1
[1] 1 2 0 0 1 1

This is also an alternative to using ifelse() in dplyr

df = data.frame(col = c(1,2,NA,NA,1,1))
df <- df %>%
   mutate(col = replace(col,is.na(col),0))