[R] Names in vector occurring in another vector

[jim holtman]

Try this:

> mainnames<-c("CAD","AUD")
>
> checknames<-c("CAD.l1","AUD.l1","JPY.l1","EUR.l1","CAD.l2","AUD.l2","JPY.l2","EUR.l2")
>
> x.match <- grep(paste(mainnames, collapse="|"), checknames)
> x.match
[1] 1 2 5 6
> checknames[-x.match]
[1] "JPY.l1" "EUR.l1" "JPY.l2" "EUR.l2"
>


On 4/16/07, Leeds, Mark (IED) <Mark.Leeds at morganstanley.com> wrote:
> I have a vector of character strings such as
>
> mainnames<-c("CAD","AUD") and another vector say
>
> checknames<-c("CAD.l1","AUD.l1","JPY.l1","EUR.l1","CAD.l2","AUD.l2","JPY
> .l2","EUR.l2")
>
> I want a new vector of character strings that is just
> resultnames<-c("JPY.l1","EUR.l1","JPY.l2","EUR.l2")
>
> Because any time a name occurs in checknames that has a subset that
> matches with mainnames, the
> name in checknames should not be in the final result !!!!!!!!!!!!!!!!!
>
> I can't use %in% because this example doesn't require exact matching.
> The general problem would always have an  "el after the dot but the
> numbers can go upto double digits.
> Thanks a lot.
>
>
>
> mark
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>
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>
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-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?