我有2个数据帧。代码为：year、pd、treatm和rep。变量是第一个数据帧中的LAI，cimer、himv、nõv在第二个数据帧。我想将变量LAI添加到其他变量/列中。我不知道如何设置LAI数据的正确顺序，而1个数据有4个代码需要定义。你能帮我解决这个问题吗？非常感谢！
数据帧为：
> sample1
year treatm pd rep LAI
1 2020 1 A 1 2.58
2 2020 1 A 2 2.08
3 2020 1 A 3 2.48
4 2020 1 A 4 2.98
5 2020 2 A 1 3.34
6 2020 2 A 2 3.11
7 2020 2 A 3 3.20
8 2020 2 A 4 2.56
9 2020 1 B 1 2.14
10 2020 1 B 2 2.17
11 2020 1 B 3 2.24
12 2020 1 B 4 2.29
13 2020 2 B 1 3.41
14 2020 2 B 2 3.12
15 2020 2 B 3 2.81
16 2020 2 B 4 2.63
17 2021 1 A 1 2.15
18 2021 1 A 2 2.25
19 2021 1 A 3 2.52
20 2021 1 A 4 2.57
21 2021 2 A 1 2.95
22 2021 2 A 2 2.82
23 2021 2 A 3 3.11
24 2021 2 A 4 3.04
25 2021 1 B 1 3.25
26 2021 1 B 2 2.33
27 2021 1 B 3 2.75
28 2021 1 B 4 3.09
29 2021 2 B 1 3.18
30 2021 2 B 2 2.75
31 2021 2 B 3 3.21
32 2021 2 B 4 3.57
> sample2
year.pd.treatm.rep.cimer.himv.nőv
1 2020,A,1,1,92,93,94
2 2020,A,2,1,91,92,93
3 2020,B,1,1,72,73,75
4 2020,B,2,1,73,74,75
5 2020,A,1,2,95,96,100
6 2020,A,2,2,90,91,94
7 2020,B,1,2,74,76,78
8 2020,B,2,2,71,72,74
9 2020,A,1,3,94,95,96
10 2020,A,2,3,92,93,96
11 2020,B,1,3,76,77,77
12 2020,B,2,3,74,75,76
13 2020,A,1,4,90,91,97
14 2020,A,2,4,90,91,94
15 2020,B,1,4,74,75,NA
16 2020,B,2,4,73,75,NA
17 2021,A,1,1,92,93,94
18 2021,A,2,1,91,92,93
19 2021,B,1,1,72,73,75
20 2021,B,2,1,73,74,75
21 2021,A,1,2,95,96,100
22 2021,A,2,2,90,91,94
23 2021,B,1,2,74,76,78
24 2021,B,2,2,71,72,74
25 2021,A,1,3,94,95,96
26 2021,A,2,3,92,93,96
27 2021,B,1,3,76,77,77
28 2021,B,2,3,74,75,76
29 2021,A,1,4,90,91,97
30 2021,A,2,4,90,91,94
31 2021,B,1,4,74,75,NA
32 2021,B,2,4,73,75,NA
您可以从dply使用inner_join
library(tidyverse)
inner_join(sample2,sample1, by=c("year","pd", "treatm", "rep"))
输出(前六行(
year pd treatm rep cimer himv nov LAI
1: 2020 A 1 1 92 93 94 2.58
2: 2020 A 2 1 91 92 93 3.34
3: 2020 B 1 1 72 73 75 2.14
4: 2020 B 2 1 73 74 75 3.41
5: 2020 A 1 2 95 96 100 2.08
6: 2020 A 2 2 90 91 94 3.11
您也可以使用data.table
sample2[sample1, on=.(year,pd,treatm,rep)]