Message-ID: <4329A1EF.26591.19498C8@localhost>
Date: 2005-09-15T14:31:43Z
From: PIKAL Petr
Subject: Remove vector elements from another vector
In-Reply-To: <BAY12-F51E657A81E8BED92ECA0DDD9C0@phx.gbl>
Hi
On 13 Sep 2005 at 14:35, Karsten Luder wrote:
> Hello,
>
> I have two vectors of different lengths. Fx a <- 1:9; b <- c(4, 5).
> What is the best way to remove the elements in vector b from vector a
> so that the result would be a vector with elements c(1,2,3,6,7,8,9)?
> which(!a%in%b)
[1] 1 2 3 6 7 8 9
> a[which(!a%in%b)]
[1] 1 2 3 6 7 8 9
> a[(!a%in%b)]
[1] 1 2 3 6 7 8 9
>
HTH
Petr
>
> Best regards,
> Kalle
>
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Petr Pikal
petr.pikal at precheza.cz