用R创建一个连续的字母列表

Question

我希望能够在R中创建一系列字母(以帮助从SPSS文件导入数据)

创建一系列数字非常容易,例如:

seq(1,1000)
[1] 1 2 3 4 5 6 ... 1000

paste("something_",1:12,sep="")
[1] something1 something2 ... something12

但是,是否有任何附加,粘贴或创建这样的字母序列的功能？

paste("This_",a:z,sep="")
[1]This_a This_b This_c ... This_4z

提前致谢!

Answer 1

这就是你要找的东西:

> paste("This_", letters, sep="")

> [1] "This_a" "This_b" "This_c" "This_d" "This_e" "This_f" "This_g" "This_h"
  [9] "This_i" "This_j" "This_k" "This_l" "This_m" "This_n" "This_o" "This_p"
  [17] "This_q" "This_r" "This_s" "This_t" "This_u" "This_v" "This_w" "This_x"
  [25] "This_y" "This_z"

Answer 2

你看看了吗？

?LETTERS

并不是那样做你想要的？还有paste()相关的功能.

编辑:也许collapse=粘贴是你需要的:

R> replicate(5, paste(sample(LETTERS, 10, replace=TRUE), collapse=""))
[1] "OHZBIYEFMD" "UINBOFEIXN" "UORJZATYNT" "ZNPWNBFFXJ" "ZOKYMTCDKZ"
R> 

Answer 3

多谢你们!我想到了!

paste(letters[1:26])

干杯!

Answer 4

对于"a"到"z"它是

letters

对于"A"到"Z"它

LETTERS

并且要在序列中打印特定字母,例如,如果您只想要j,k和l

letters[10:12]