r - 标点符号向量

Question

对于数字我可以这样写一个向量:

digits <- c("0","1","2","3","4","5","6","7","8","9")

我怎样才能得到标点符号的类似向量？

Answer 1

您可以使用 Unicode 代码点将数字转换为标点符号(感谢 Konrad，指出了这一点)。

strsplit(intToUtf8(c(33:47, 58:64, 91:96)), "")[[1]]
# [1] "!"  "\"" "#"  "$"  "%"  "&"  "'"  "("  ")"  "*"  "+"  ","  "-"  "." 
#[15] "/"  ":"  ";"  "<"  "="  ">"  "?"  "@"  "["  "\\" "]"  "^"  "_"  "`"

一些埃塞俄比亚标点符号(0x1361:0x1367):

strsplit(intToUtf8(0x1361:0x1367), "")[[1]]
[1] "፡" "።" "፣" "፤" "፥" "፦" "፧"

如果缺少您要使用的标点符号，您可以查找与您想要的标点符号关联的 unicode 点，然后使用它(例如 http://www.fileformat.info/info/unicode/category/Po/list.htm 之类的地方)。您还可以从 utf8ToInt 获取整数。例如 "~"不包括在上面:

utf8ToInt("~")
#[1] 126