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

If you are not familiar with regular expressions, the function strsplit can help you :

data <- c('Resistance_Test DevID (Ohms) 428', 'Diode_Test SUBLo (V) 353')
unlist(lapply(strsplit(data, ' '), function(x) x[4]))
[1] "428" "353"