通过R中的多个变量传播到广泛的数据框组？ [复制]

Question

我试图使用pivot_wider() 和spread() 函数将我的数据从长格式改写为宽格式。是否可以通过多个变量（即我的数据框中的 ccode 和 year）传播到广泛的数据框组？

当前数据框：

ccode	industry	year	TO
2	agri	2000	8.3
2	agri	2001	9.2
2	mineral	2000	9.1
3	agri	2000	6.1
3	agri	2001	8.1
3	mineral	2000	9
4	agri	2000	9
4	agri	2001	5.3
4	mineral	2000	8.1
5	agri	2000	8.4
5	agri	2001	4.3
5	mineral	2000	4.2

理想结果：

ccode	year	agri	mineral
2	2000	8.3	9.1
2	2001	9.2	NA
3	2000	6.1	9
3	2001	8.1	NA
4	2000	9	8.1
4	2001	5.3	NA
5	2000	8.4	9.1
5	2001	4.3	4.2

谢谢。

Answer 1

我们可以使用pivot_wider

library(tidyr)
pivot_wider(df1, names_from = industry, values_from = TO)

-输出

# A tibble: 8 x 4
#  ccode  year  agri mineral
#  <int> <int> <dbl>   <dbl>
#1     2  2000   8.3     9.1
#2     2  2001   9.2    NA  
#3     3  2000   6.1     9  
#4     3  2001   8.1    NA  
#5     4  2000   9       8.1
#6     4  2001   5.3    NA  
#7     5  2000   8.4     4.2
#8     5  2001   4.3    NA  

数据

df1 <- structure(list(ccode = c(2L, 2L, 2L, 3L, 3L, 3L, 4L, 4L, 4L, 
5L, 5L, 5L), industry = c("agri", "agri", "mineral", "agri", 
"agri", "mineral", "agri", "agri", "mineral", "agri", "agri", 
"mineral"), year = c(2000L, 2001L, 2000L, 2000L, 2001L, 2000L, 
2000L, 2001L, 2000L, 2000L, 2001L, 2000L), TO = c(8.3, 9.2, 9.1, 
6.1, 8.1, 9, 9, 5.3, 8.1, 8.4, 4.3, 4.2)), class = "data.frame",
row.names = c(NA, 
-12L))