hi i have the following dataframe
x y
1 345
6 NA
8 123
32 123
12 NA
6 124
7 NA
and i want to extract the data rows which contains NA data, I tried
subset(dataframe,y==NA)
but fail. if you know the answers, please let me know thanks.
typhoong
On 25/01/2011 8:07 p.m., typhoong wrote:
hi i have the following dataframe
x y
1 345
6 NA
8 123
32 123
12 NA
6 124
7 NA
and i want to extract the data rows which contains NA data, I tried
subset(dataframe,y==NA)
but fail. if you know the
Hi!
Try
subset(dataframe, is.na(y))
or
df[is.na(df$y),]
HTH,
Ivan
Le 1/25/2011 08:07, typhoong a écrit :
hi i have the following dataframe
x y
1 345
6 NA
8 123
32 123
12 NA
6 124
7 NA
and i want to extract the data rows which contains NA data,
Hi,
May be try this :
data[which(is.na(data[,2])),]
2011/1/25 typhoong graham...@eurus-energy.com
hi i have the following dataframe
x y
1 345
6 NA
8 123
32 123
12 NA
6 124
7 NA
and i want to extract the data rows which contains NA
big thanks for all answers !
--
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