[英]match/merge dataframes with a number columns with different column names in r
merge(df1,df2,by.x="y",by.y="R")[c("y","score")]
y score
1 2 3
2 111 4
我们可以使用base R
match
df2[match(df2$R, df1$y, nomatch = 0), c("R", "score")]
# R score
#3 2 3
#4 111 4
另一个选择是semi_join
的dplyr
library(dplyr)
semi_join(df2[-1], df1, by = c(R = "y"))
# R score
#1 2 3
#2 111 4
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