使用R转动/转换/重塑/取消叠加数据

Question

我的数据格式如下：

df1 <- cbind(allnames = c("id","descx","descy","descz","id","descx","descy","descz","id","descx","descy","descz"), 
             allvalues = c(100,"aaa","bbb", "ccc", 200,"ddd","eee", "fff",300,"ggg","hhh", "iii"))
> df1
  allnames allvalues
 [1,] "id"     "100"    
 [2,] "descx"  "aaa"    
 [3,] "descy"  "bbb"    
 [4,] "descz"  "ccc"    
 [5,] "id"     "200"    
 [6,] "descx"  "ddd"    
 [7,] "descy"  "eee"    
 [8,] "descz"  "fff"    
 [9,] "id"     "300"    
[10,] "descx"  "ggg"    
[11,] "descy"  "hhh"    
[12,] "descz"  "iii"

我想将df1转换为以下格式：

     id    descx descy descz
[1,] "100" "aaa" "bbb" "ccc"
[2,] "200" "ddd" "eee" "fff"
[3,] "300" "ggg" "hhh" "iii"

我尝试reshape2和tidyr个数据库来转移/转换df1是徒劳的。我还在此论坛中检查并测试了这些和其他帖子（R: Pivoting using 'spread' function; Pivot table on R using `dplyr` or `tidyr`; Using R, how to pivot/transform a dataset whose elements are the result of a function;）的建议表格，但无法获得我需要的输出。有什么建议可以满足我的需求吗？