How to remove NA observations from a categorical Variable in R

Question

> DF <- data.frame(v = factor(c("red", "blue", "green", "blue",NA,NA,NA)))
> summary(DF)
     v    
 blue :2  
 green:1  
 red  :1 
 NA: 3

I have two questions: 1)How can i remove these NA from this categorical variable? I mean i want to remove all rows from my dataframe who have NA in v. (As My original dataframe has many columns). 2)How can i remove "green" from this variable?

I don't see any `NA` values when I do `summary(DF)` . To remove them `NA` in general you can use https://stackoverflow.com/questions/20977972/how-to-remove-na-data-in-only-one-columns — Ronak Shah, May 20 '20 at 09:08
Thanks and second part of my question. How to remove "green". — Aryh, May 20 '20 at 09:21

score 0 · Answer 1 · answered May 20 '20 at 09:11

0

I am unable to reproduce your NAs. but in your original dataframe, you may want to perform:

DF<-na.omit(DF)

This should remove all the NAs.

answered May 20 '20 at 09:11

Ginko-Mitten

304
1
11

I have edit the example. Now it is reproduecable. Moreover i want to remove all the rows having NA in column V. – Aryh May 20 '20 at 09:16
The na.omit solution should work even then. Try it – Ginko-Mitten May 20 '20 at 09:20

How to remove NA observations from a categorical Variable in R

1 Answers1