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a_aid
2012 Feb 14
3
Wildcard for indexing?
...ments of a vector that start with A (A*) OR that start with B (B*)"
Probably that is quite easy. I looked into grep() which I think might perform such tasks, but probably there is a more straigth forward solution.
a <- c("A_A","A_B","C_A","BB","A_Asd")
a[a=="A_A"| a=="A_B"] # here I'd like an index but with wildcard
/johannes
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