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  1. library(stringr)
  2.  
  3. myvec<-c("increa_0_1-1","increa_9_25-112","increa_25-50-76" )
  4.  
  5. str_match(myvec,  "_([0-9]+)")[,2]
Success #stdin #stdout 0.32s 42260KB
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Standard input is empty
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[1] "0"  "9"  "25"
https://ideone.com/23ZmzQ
language:
R (R 3.5.2)
created:
3 years ago
visibility:
secret

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