合并多个数据框

Question

df1 <- data.frame(name = c("A","B","C"), f1 = c(1,2,3), f2 = c("zz","mo","do"))
df2 <- data.frame(name = c("D","B","C"), f1 = c(1,4,6), f2 = c("ok","no","do"))
df3 <- data.frame(name = c("D","E","C"), f1 = c(1,2,3), f2 = c("so","yo","kl"))

我想将它们合并到一个数据框中,以便它看起来像

name    df.1f1   df1.f2    df2.f1   df2.f2   df3.f1   df3.f2
A            1       zz        na       na       na       na     
B            2       mo         4       no       na       na      
C            3       do         6       do        3       kl
D           na       na         1       ok        1       so
E           na       na        na       na        2       yo

虽然我可以使用重复的dplyr :: full_join来做到这一点,但它太繁琐了.谁有更好的方法来做到这一点？

Answer 1

如果您有多个数据框,可以列出它们.受到vaettchen的启发

Reduce(function(x,y) merge(x,y,by="name",all=TRUE) ,list(df1,df2,df3))

Answer 2

和往常一样R，有很多方法。对我来说，嵌套合并可以很好地完成这项工作：

merge( merge( df1, df2, by = "name", all = TRUE ), df3, by = "name", all = TRUE )

  name f1.x f2.x f1.y f2.y f1   f2
1    A    1   zz   NA <NA> NA <NA>
2    B    2   mo    4   no NA <NA>
3    C    3   do    6   do  3   kl
4    D   NA <NA>    1   ok  1   so
5    E   NA <NA>   NA <NA>  2   yo