Message-ID: <da79af330911091213u46f366a0m961315fffdb46616@mail.gmail.com>
Date: 2009-11-09T20:13:43Z
From: Henrique Dallazuanna
Subject: Find the first values in vector
In-Reply-To: <26271555.post@talk.nabble.com>
Try this:
head(vec, sum(cumprod(vec)))
The positions:
which(head(vec, sum(cumprod(vec))))
On Mon, Nov 9, 2009 at 4:44 PM, Grzes <gregorio99 at gmail.com> wrote:
>
> Hi !
> I have a vector:
> vec= TRUE ?TRUE ?TRUE ?TRUE FALSE FALSE FALSE FALSE TRUE ?TRUE ?FALSE
> and I'm looking for a method which let me get only the first values equal
> TRUE from this vector. It means that I want to get a vector:
> vec_out = ?TRUE ?TRUE ?TRUE ?TRUE
>
> or posictions values = TRUE: vec_out = 1,2,3,4
> --
> View this message in context: http://old.nabble.com/Find-the-first-values-in-vector-tp26271555p26271555.html
> Sent from the R help mailing list archive at Nabble.com.
>
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> and provide commented, minimal, self-contained, reproducible code.
>
--
Henrique Dallazuanna
Curitiba-Paran?-Brasil
25? 25' 40" S 49? 16' 22" O