如何删除R中除特殊标点符号外的所有英文单词

Question

我在 R 中有一个数据文件，

data <- "conflict need resolved :<  turned conversation exchange ideas richer environment one tricky concepts :D    conflict  always top business agendas :>  maybe different ideas opinions different :)"

从这里我想删除所有单词，只有微笑会在那里，以及我期待的输出，

":< :D :> :)"

R 中是否有任何库或方法可以轻松完成此任务？

Answer 1

您可以使用 [[:alnum:]] 作为字符串中所有数字和字母数字字符的正则表达式模式

s <- gsub("[[:alnum:]]*", "", "conflict need resolved :<  turned conversation exchange ideas richer environment one tricky concepts :D    conflict  always top business agendas :>  maybe different ideas opinions different :) ")
gsub(" +", " ", s)

[1] " :< : :> :) "

如何删除R中除特殊标点符号外的所有英文单词

how to delete all English words, except special punctuation, in R

regex

r

text-mining

data-cleaning