Extract “words” from a string

Question

I have a table with 153 rows by 9 columns. My interest is the character string in the first column, I want to extract the fourth word and create a new list from this fourth

Answer 1

You could use word() from the stringrpackage:

> x <- c("Resistance_Test DevID (Ohms) 428", "Diode_Test SUBLo (V) 353")
> library(stringr)
> word(string = x, start = 4, end = 4)
[1] "428" "353"

Specifying the position of both the start and end words to be the same, you will always get the fourth word.

I hope this helps.