Subset a data.frame according to elements in a column

Asked Apr 11 '16 at 13:24

Active Apr 03 '21 at 10:27

Viewed 25 times

I have a data.frame that looks like this:

 A     name_a    
 A     name_a    
 A     name_a    
 B     name_b
 B     name_b
 B     name_b
 C     name_c
 C     name_c
 C     name_c

I would like the following output:

 A     name_a    
 B     name_b    
 C     name_c

I used the following string:

df_subsetted = df[unique(df[,2]), ]

but it seems not to work. What can I try next?

edited Apr 03 '21 at 10:27

halfer

asked Apr 11 '16 at 13:24

Bfu38

1

You are probably looking for `df[!duplicated(df[, 2]),]`. `unique` doesn't return a logical vector, – David Arenburg Apr 11 '16 at 13:27
1

`unique(df)` would also work – talat Apr 11 '16 at 13:28

0 Answers0