Hello,
Try the following.
wanted <- c("A_cont_12", "AB_cont_22", "cont_21_Aa")
x <- c("A_cont_1", "A_cont_12", "B_treat_8", "AB_cont_22", "cont_21_Aa")
pattern <- c("A", "cont", "2")
ix <- Reduce(`&`, lapply(pattern, grepl, x)) # This does the trick
identical(wanted, x[ix])
See ?Reduce.
Hope this helps,
Rui Barradas
Em 23-06-2012 11:19, Zhipeng Wang escreveu:
Suppose I have a vector ["A_cont_1", "A_cont_12", "B_treat_8",
"AB_cont_22", "cont_21_Aa"], I hope I can extract the strings which include
3 short strings, say "A", "cont" and "2", that is to say, "A_cont_12",
"AB_cont_22" and "cont_21_Aa" will be extract, using a relatively short
code (using grep?).
Would you please to give some idea? Thank you !
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