R程序中的grepl滤波器

Question

尝试过滤只包含单词DEV的行，但是下面的内容也是错误的匹配，比如SEV、HEV和BEV。

数据

Airport_ID<-c("3001","3002","3003","3004")
    Airport_Name<-c("Adelaide DEV DTSUpdated","Brisbane HEV Land Airport Land ADTS",
                    "Washington SEV INC Airport DTSUpdated","DALLAS Airport BEV INCUpdated")
dfu<-data.frame(Airport_ID,Airport_Name)

过滤码

Filter_Data <- dfu %>%  
                   dplyr::filter(grepl(" \\DEV\\ ",Airport_Name))

预期产出：

    3001 Adelaide DEV DTSUpdated

Answer 1

只管用

library(dplyr)

dfu |> filter(grepl("DEV" , Airport_Name , fixed = T))

• output

  Airport_ID            Airport_Name
1       3001 Adelaide DEV DTSUpdated