如何从R中的字符串中删除序列号

Question

如何从R中的文本中删除序列号：

样本数据：

a=data.frame(text=c("1.This can be achieved using xyz method. 2. It consists of various steps. 3. For more details, check this website))

预期结果：

This can be achieved using xyz method. It consists of various steps.
For more details, check this website.

Answer 1

我们可以在此处尝试使用sub

input <- "1.This can be achieved using xyz method.  2. It consists of various steps. 3. For more details, check this website"
input <- gsub("\\d+\\.\\s*", "", input)

[1] "This can be achieved using xyz method.  It consists of various steps. For more details, check this website"

Answer 2

或者使用stringr包和str_remove_all函数

> text <- c("1.This can be achieved using xyz method.  2. It consists of various steps. 3. For more details, check this website")
> stringr::str_remove_all(text, "\\d+\\.\\s?")
[1] "This can be achieved using xyz method.  It consists of various steps. For more details, check this website"