[R] matching pairs regardless of order

[Henrique Dallazuanna]

Try this:

x[mapply(function(x, y)all(x %in% y), strsplit(x, ','), strsplit(trip, ','))]

On Fri, Sep 18, 2009 at 9:47 AM, Juliane Struve
<juliane_struve at yahoo.co.uk> wrote:
> Dear list,
>
> I am using match() to match pairs of locations, e.g. trip="loc1,loc2" from a list of such pairs, e.g. list=("loc1,loc2", "loc1,loc3", "loc2,loc3","loc2,loc1").
>
> In this example match() will match "trip" with the first element of "list", but not the 4th, because the order is reversed.
>
> How can I get a match with both ?
>
> Many thanks for any help,
>
> Juliane
>
>
>
>
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-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O