How to remove NA values from a Vector in R

Question

Is there any way to remove NA values from a vector?

If we have a vector consisting of lot values with NA values, how to remove it?

Suppose I have to sum the vector without including NA values?

Answer 1

To calculate sum we can use "sum()" Func by passing argument "na.rm=TRUE"

x<-c(1,23,45,NA,155,78,NA)

sum(x,na.rm=TRUE)

Want to remove NA from the vector

x<-x[!is.na(x)]

Answer 2

data = data[!is.na(data)]\

Comments

Yup!! Very accurate to remove NA values.

Answer 3

using the function "complete.cases"

for example, if you want to remove the NA in dataset ,

> x <- c(1, 2, NA, 4, NA, 5)
> y <- c("a", "b", NA, "d", NA, "f")
> good <- complete.cases(x, y)
> good
[1] TRUE TRUE FALSE TRUE FALSE TRUE
> x[good]
[1] 1 2 4 5
> y[good]
[1] "a" "b" "d" "f"
 

above is from coursera lecture R from Professor Peng

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Comments

That's a nice way to go about it. It's an unusual approach but got the same expected output. Thanks

Answer 4

You can try na.omit() or na.exclude() too. It might help you.

When you view y1,y2, they would be shown as below.

It would show you rows with indices and those with nulls.

Answer 5

Hello team,

you can use na.omit

x <- c(NA, 3, NA, 5)
na.omit(x)
[1] 3 5
attr(,"na.action")
[1] 1 3
attr(,"class")
[1] "omit"