R 데이터 합치기

1 rbind()

R rbind() 문서를 참고하십시오.

df1
##   Class  Name English Math
## 1     A Alice      90   60
## 2     A   Bob      80   NA
df2
##   Class  Name English Math
## 1     B Carol      NA   80
## 2     B  Dave      60   90
rbind(df1, df2)
##   Class  Name English Math
## 1     A Alice      90   60
## 2     A   Bob      80   NA
## 3     B Carol      NA   80
## 4     B  Dave      60   90

2 merge()

majors
##    Name   Major
## 1 Alice     Art
## 2   Bob Biology
## 3  Dave   Dance
## 4   Eve English
grades
##    Name Grade
## 1 Alice     A
## 2   Bob     B
## 3 Carol     C
merge(x=majors, y=grades, id='Name')
##    Name   Major Grade
## 1 Alice     Art     A
## 2   Bob Biology     B

3 같이 보기