我的數據是一串使用read.table拉入R的數字。這裏是數據：如何在字符串中的每個字符之間插入空格？
20402000224222032203233430020222024422320202234232443443004440404332402220404233302004204202004033420200022204334434044422322400200244044322202200234200424402002224303430023432202220343420323200300022320004223040024342244424040322424340240044220302432400203033300042423340222323200020034043004
如何在每個數字之間插入一個空格，所以輸出看起來更像這樣？
2 0 4 0 2 0 0 0 etc...
可以按如下方式通過gsub做到這一點：
txt <- readLines("path/to/my-txt-file.csv")
trimws(gsub("", " ", txt))
出於測試目的，只需使用：
txt <- "20402000224222032203233430020222024422320202234232443443004440404332402220404233302004204202004033420200022204334434044422322400200244044322202200234200424402002224303430023432202220343420323200300022320004223040024342244424040322424340240044220302432400203033300042423340222323200020034043004"
導致：
"2 0 4 0 2 0 0 0 2 2 4 2 2 2 0 3 2 2 0 3 2 3 3 4 3 0 0 2 0 2 2 2 0 2 4 4 2 2 3 2 0 2 0 2 2 3 4 2 3 2 4 4 3 4 4 3 0 0 4 4 4 0 4 0 4 3 3 2 4 0 2 2 2 0 4 0 4 2 3 3 3 0 2 0 0 4 2 0 4 2 0 2 0 0 4 0 3 3 4 2 0 2 0 0 0 2 2 2 0 4 3 3 4 4 3 4 0 4 4 4 2 2 3 2 2 4 0 0 2 0 0 2 4 4 0 4 4 3 2 2 2 0 2 2 0 0 2 3 4 2 0 0 4 2 4 4 0 2 0 0 2 2 2 4 3 0 3 4 3 0 0 2 3 4 3 2 2 0 2 2 2 0 3 4 3 4 2 0 3 2 3 2 0 0 3 0 0 0 2 2 3 2 0 0 0 4 2 2 3 0 4 0 0 2 4 3 4 2 2 4 4 4 2 4 0 4 0 3 2 2 4 2 4 3 4 0 2 4 0 0 4 4 2 2 0 3 0 2 4 3 2 4 0 0 2 0 3 0 3 3 3 0 0 0 4 2 4 2 3 3 4 0 2 2 2 3 2 3 2 0 0 0 2 0 0 3 4 0 4 3 0 0 4"
這隻刀片字符之間的空格rs但不在開頭或結尾：
gsub("(.)\\B", "\\1 ", "abcdef")
## [1] "a b c d e f"
或者，在'readLines'後：'txt_string < - strsplit（txt，「」）' –