string - strsplit by integers in R -

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suppose have strings such like:

   "0cgy-gcsf6hr-f-m5"    "100cgy-lps12hr-m-m2"    "300cgy-notrt24hr-f-m2"    "0cgy-6h-m1"

it's sort of complicated, want retrieve them to:

"gcsf", "lsp", "notrt", "notrt"

which means if there none of "gcsf", "lsp", "notrt", return "notrt". , integers before h/hr

6, 12, 24, 6

i have tried while frustrated. have ideas?

do mean this?

library(stringi) library(magrittr)  s <- c("0cgy-gcsf6hr-f-m5", "100cgy-lps12hr-m-m2",     "300cgy-notrt24hr-f-m2", "0cgy-6h-m1")  stri_extract_all_regex(s, "[a-z]+(?=[0-9]+hr?-)") %>%     unlist() %>%     ifelse(is.na(.), "notrt", .)  stri_extract_all_regex(s, "[0-9]+(?=hr?-)") %>% unlist()

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