How to select specific characters from input in R?-CodePudding

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How to select specific characters from input in R?

Time：04-20

I have a vector with data of the form

c("AM1-Project", "AM14-Blend", "B5-Implement", "SS10-Review")

and I would like to select only the characters until "-", so the ouptut should be

c("AM1", "AM14", "B5", "SS10")

CodePudding user response：

You could use sub here:

x <- c("AM1-Project", "AM14-Blend", "B5-Implement", "SS10-Review")
output <- sub("-.*", "", x)
output

[1] "AM1"  "AM14" "B5"   "SS10"