Enhancement proposition for filter

[Sade154]

Hello,

What do you think of having an additional argument for the filter function to keep NA values :

df <- data.frame(x = 1:10, y = c(1:7, NA, NA, NA), z = 1:10)

filter(df, y > 4) # 3 rows
df[df$y > 4, ]    # 6 rows
# option for filter : filter(, keepNA = TRUE) ?. The argument would be FALSE by default

I think it could be useful. In this case for example, y=NA doesn't mean y<= 4.

KR

[romainfrancois]

You can always do:

> filter( df, is.na(y) | y > 4 )
   x  y  z
1  5  5  5
2  6  6  6
3  7  7  7
4  8 NA  8
5  9 NA  9
6 10 NA 10

[Sade154]

Right. Thx