R 如何连接/排序两个没有ID的相关数据集？

我想合并两个相关但没有公共ID的数据帧

2010-01-01
2010-01-02
2010-01-03     
2010-01-25 
2010-01-26
2010-01-27
2010-01-28
2010-01-29
2010-01-30

示例数据：

 df1                 df2
2010-01-01           2010-01-26
2010-01-02           2010-01-27
2010-01-03           2010-01-28
2010-01-25           2010-01-29
                     2010-01-30
                     (2010-01-31)

2010-01-01
2010-01-02
2010-01-03     
2010-01-25 
2010-01-26
2010-01-27
2010-01-28
2010-01-29
2010-01-30

期望的：

2010-01-01
2010-01-02
2010-01-03     
2010-01-25 
2010-01-26
2010-01-27
2010-01-28
2010-01-29
2010-01-30

我试过了

2010-01-01
2010-01-02
2010-01-03     
2010-01-25 
2010-01-26
2010-01-27
2010-01-28
2010-01-29
2010-01-30

library(plyr) # joining tables
hi<-join(df1, df2, by = NULL)

library（plyr）#连接表
您好，
rbind
正是您想要的：它字面上是将列“堆叠”在彼此之上：

2010-01-01
2010-01-02
2010-01-03     
2010-01-25 
2010-01-26
2010-01-27
2010-01-28
2010-01-29
2010-01-30

df1 <- data.frame(data=c("2010-01-01", "2010-01-02", "2010-01-03", "2010-01-25"))
df2 <- data.frame(data=c("2010-01-26", "2010-01-27", "2010-01-28", "2010-01-29", "2010-01-30"))

rbind(df1, df2)
#        data
#1 2010-01-01
#2 2010-01-02
#3 2010-01-03
#4 2010-01-25
#5 2010-01-26
#6 2010-01-27
#7 2010-01-28
#8 2010-01-29

尝试
rbind
或
rbind.fill
（后者来自
plyr
）。@Mamba在执行
rbind
（如krlmlr所评论）之前，请确保数据集的列名（假设只有一列）相同。如果希望日期按升序排列，然后可以在
rbind
之后使用
order
。这将给出所需的格式。