当列与R中的其他数据框列匹配时，如何从数据框中删除行

Question

I have a data frame A of the below format Word Freq p 9531 can 2085 /p 2055 get 1183 use 1112

and another data frame B

Word Freq p 10 can 2 /p 55

Now I want to remove the rows from data frame A that has a matching in the data frame B. So my output would be for data frame A

Word Freq get 1183 use 1112

Answer 1

Do it this way:

A<-read.table(text="Word     Freq
p        9531
can      2085
/p       2055
get      1183
use      1112",header=T)

B<-read.table(text="Word     Freq
p        10
can      2
/p       55",header=T)

A[-which(A$Word %in% B$Word),]

result:

  Word Freq
4  get 1183
5  use 1112