根据 R 中的几种模式拆分列

Question

我需要做的一些数据处理工作是根据几个单词拆分一列。为了简单起见，假设我只有两个词（之前和之后）

示例数据

data <- structure (list(author=c("joe","mack","rick"),options=c("bike before run","car after bike","bus after bike")), class= "data.frame", row.names=c(NA,-3L))

输出：

author  new1   new2
joe     bike   run
mack    car    bike
rick    bus    bike

尝试使用 tidyr 无济于事

data %>% tidyr::separate(options, into=c("new1","new2"),sep="after|before")

Answer 1

试试这个：

library(dplyr)
library(reshape)

data %>% cbind(.,colsplit(data$options, "after|before", c("new1", "new2"))) %>%
      select(-options)

根据 R 中的几种模式拆分列

Split column depending on several patterns in R

string

r

tidyr