將R中的9列組合起來組成

Question

我有一個數據集，它有9行54列的各種數字。我想將前九列的值合併到一個長列中，然後對於以下9列中的每一列都是一樣的，直到我有6列長列。看起來這應該很容易，但是我在網上找到的類似問題沒有一個適用於我的數據集。

Answer 1

假設你想要的變量連在一起，我要把這6個變量爲2 3，而不是54到6 9演示：

library(dplyr) # load package 
library(tidyr) # load package 

set.seed(1839) # set seed for replication 
d <- tibble(x=rnorm(5), y=rnorm(5), z=rnorm(5), # create data frame 
      a=rnorm(5), b=rnorm(5), c=rnorm(5)) # create data frame 

數據幀的樣子：

# A tibble: 5 x 6 
      x   y   z   a   b   c 
     <dbl>  <dbl>  <dbl>  <dbl>  <dbl>  <dbl> 
1 1.0127014 -0.7025836 0.2956671 -0.3563105 1.3232985 -0.367605941 
2 -0.6845605 -1.4586245 0.3016737 1.6841862 -0.6978598 1.608783979 
3 0.3492607 0.1987113 -0.0945271 1.3073516 -0.3971175 -1.074255857 
4 -1.6245010 1.0544690 -0.2790357 0.4352904 0.1711608 0.006136588 
5 -0.5162476 -0.7112214 0.1681388 1.4536406 0.6854223 -0.442184403 

現在使用unite功能：

d <- d %>% # take data frame 
    unite(var1, x:z, sep="; ") %>% # combine with semicolon and space in between 
    unite(var2, a:c, sep="; ") # combine with semicolon and space in between 

並且將所得的數據幀：

# A tibble: 5 x 2 
                 var1              var2 
*              <chr>              <chr> 
1 1.01270138785465; -0.702583610804264; 0.295667113228807 -0.356310525447978; 1.3232984913192; -0.367605940884135 
2 -0.684560547695866; -1.45862451298252; 0.301673721520136 1.68418623459335; -0.697859769158927; 1.60878397933222 
3 0.349260666732972; 0.198711282685719; -0.0945271007709923 1.3073516257469; -0.397117503476358; -1.07425585717004 
4 -1.62450101506933; 1.05446901501249; -0.279035672484018 0.435290405700962; 0.171160804752516; 0.00613658799909723 
5 -0.516247631722097; -0.711221362746118; 0.168138783952361 1.45364055160547; 0.685422280037675; -0.442184403125297 

Answer 2

試試這個。假設您的data.frame是df：

as.data.frame(matrix(unlist(df),ncol=6))