R 使用分隔符将一行分隔为多行

将数据帧数据放入一行，如下所示：

data.frame(text = c("in this line ???? another line and ???? one more", "more lines ???? another row")

使用分隔符？？？分隔成多行？？？？。这里是预期输出

data.frame(text = c("in this line", "another line and", "one more", "more lines", "another row")

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这是一个基本的R解决方案

dfout <- data.frame(text = unlist(strsplit(as.character(df$text),split = " \\?{4} ")))

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如果您执行

sep='？？'

和add

fixed=TRUE

，它将通过绕过regex显著提高效率engine@Sotos谢谢你的信息，很高兴知道

dfout <- data.frame(text = unlist(strsplit(as.character(df$text),split = " ???? ", fixed = TRUE)))

> dfout
              text
1     in this line
2 another line and
3         one more
4       more lines
5      another row