我有一个数据表如下:
| _ - 9 | PR - Very happy with results. | Improvement - Be more clear regarding how the entire process works. I.e. how long you have to wait for your account to become active. | Churn Reason - none"
如果有的话,我尝试从每一行删除| Improvement...|
。我把它写成
feedback <- gsub("| Improvement*|", "",data$Feedback, ignore.case = FALSE, perl = TRUE)
但它什么都没做。有人可以帮我这个吗?
答案 0 :(得分:2)
您需要转义管道字符|
,因为它们被解释为OR。您还需要.
*
量词来申请。最后,虽然这个例子并不重要,但您可能需要非贪婪的*
版本,这样您就不会收集多个字段的内容。
Feedback = "| _ - 9 | PR - Very happy with results. | Improvement - Be more clear regarding how the entire process works. I.e. how long you have to wait for your account to become active. | Churn Reason - none"
feedback <- gsub("\\| Improvement.*?\\|", "", Feedback, ignore.case = FALSE, perl = TRUE)
print(feedback)
输出:
"| _ - 9 | PR - Very happy with results. Churn Reason - none"