R, remove the Na line from the Dataframe

Use Complete.cases and Na.omit in R to remove rows containing NA

Now there is a data.frame datafile as shown below

Date sulfate nitrate ID

1 2015-1-1   NA        NA     1

2 2015-1-2  2          6     1

3 2015-1-3  NA         3     1

4 2015-1-4  4          NA     1

5 2015-1-5  NA         NA    NA

6 2015-1-6  5          7     1


去掉所有包含NA的行，

Datafile[complete.cases (datafile),]

结果如下：

Date sulfate nitrate ID

2 2015-1-2  2          6     1

6 2015-1-6  5          7     1

NA filtering for a column

datafile [Complete.cases (datafile[, 3:4]),]
The results are as follows:

Date sulfate nitrate ID

2 2015-1-2  2        6    1

3 2015-1-3   NA         3     1

6 2015-1-6   5          7     1

R, remove the Na line from the Dataframe