将2个列表合并为1个数据帧：参数意味着不同行数：

-1

> mydata 
[[1]] 
[[1]][[1]] 
    RaceIndex   Pla.   Date  RC/Track/Course  Dist.   G RaceClass 
1 16/17 Season 16/17 Season 16/17 Season  16/17 Season 16/17 Season 16/17 Season 16/17 Season 
2   158   02  06/11/16 ST/"Turf"/"C+3"   1200   GF   4R 
3   102   01  16/10/16 ST/"Turf"/"C"   1000   GF   4R 
4   032   05  18/09/16 ST/"Turf"/"C+3"   1000   GF   4 
5 15/16 Season 15/16 Season 15/16 Season  15/16 Season 15/16 Season 15/16 Season 15/16 Season 
6   754   08  01/07/16 ST/"Turf"/"A+3"   1200   GF  GRIFFIN 
7   706   02  12/06/16 ST/"Turf"/"C"   1000   Y  GRIFFIN 
      Dr   Rtg.  Trainer  Jockey   LBW  Win Odds  Act.Wt. 
1 16/17 Season 16/17 Season 16/17 Season 16/17 Season 16/17 Season 16/17 Season 16/17 Season 
2   5   058  P F Yiu C Schofield   N   7.1   129 
3   3   053  P F Yiu J Moreira   1/2   3.2   123 
4   10   053  P F Yiu  K C Ng   2   22   121 
5 15/16 Season 15/16 Season 15/16 Season 15/16 Season 15/16 Season 15/16 Season 15/16 Season 
6   4   --  P F Yiu K C Leung  7-3/4   5.5   115 
7   3   --  P F Yiu C Schofield   HD   99   117 
         RunningPosition Finish Time Final Sect.Time Declar.Horse Wt.   Gear 
1       16/17 Season 16/17 Season 16/17 Season  16/17 Season 16/17 Season 
2 4<U+00A0><U+00A0>4<U+00A0><U+00A0>2  1.09.58   22.59    1130   -- 
3 5<U+00A0><U+00A0>3<U+00A0><U+00A0>1  0.57.15   22.98    1131   -- 
4 4<U+00A0><U+00A0>2<U+00A0><U+00A0>5  0.57.55   23.11    1145   H- 
5       15/16 Season 15/16 Season 15/16 Season  15/16 Season 15/16 Season 
6 11<U+00A0><U+00A0>7<U+00A0><U+00A0>8  1.10.58   23.05    1106   H 
7 4<U+00A0><U+00A0>4<U+00A0><U+00A0>2  0.56.61   22.34    1099   H1 
    Video<U+00A0>Replay<U+00A0> 
1    16/17 Season 
2        
3        
4        
5    15/16 Season 
6        
7        



[[2]] 
[[2]][[1]] 
    RaceIndex   Pla.   Date  RC/Track/Course  Dist.   G RaceClass 
1 16/17 Season 16/17 Season 16/17 Season  16/17 Season 16/17 Season 16/17 Season 16/17 Season 
2   181   09  12/11/16 ST/"Turf"/"A+3"   1400   G   4 
      Dr   Rtg.  Trainer  Jockey   LBW  Win Odds  Act.Wt. 
1 16/17 Season 16/17 Season 16/17 Season 16/17 Season 16/17 Season 16/17 Season 16/17 Season 
2   5   052  J Size J Moreira  3-1/2   2.4   125 
             RunningPosition Finish Time Final Sect.Time Declar.Horse Wt. 
1           16/17 Season 16/17 Season 16/17 Season  16/17 Season 
2 5<U+00A0><U+00A0>6<U+00A0><U+00A0>7<U+00A0><U+00A0>9  1.22.80   23.68    1058 
      Gear Video<U+00A0>Replay<U+00A0> 
1 16/17 Season    16/17 Season 

2   --

我有上面两个数据列表，由rvest html_table。我想结合这两个列表，但我得到了以下错误。任何想法如何组合这两个列表？我想合并它们使用第一行作为标题...非常感谢将2个列表合并为1个数据帧：参数意味着不同行数：

> write.table(x = mydata, file = "/Users/Desktop/data.csv", quote = TRUE) 
Error in data.frame(list(list(RaceIndex = c("16/17 Season", "211", "146", : 
    arguments imply differing number of rows: 15, 7, 2

来源

2016-11-25 Yuen Wa Ho

也许看看[这篇文章]（http://stackoverflow.com/questions/8091303/simultaneously-merge-multiple-data-frames-in-a-列表）。 – lmo

您可以使用merge。

例子：

df_1 <- data.frame(Name = "John", Age = 21) 
df_2 <- data.frame(Name = "Maggie", Age = 5) 
lst <- list(list(df_1), list(df_2)) # You have this list 
merge(lst[[1]], lst[[2]], by=c("Name", "Age"), all=TRUE)

输出：

Name Age 
1 John 21 
2 Maggie 5

在你的情况，在by参数，您必须指定所有列名。

来源

2016-11-25 15:13:19

-1

问题解决了。最好的解决方案是使用 - dplyr :: bind_rows

来源

2016-11-30 05:51:47

将2个列表合并为1个数据帧：参数意味着不同行数：

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