[R] vector with specified values construction

[Dimitris Rizopoulos]

consider the following:

x <- numeric(24)
x[c(8,16,19,20)] <- 2
x[c(3,4,12,24)] <- 4
x

I hope it helps.

Best,
Dimitris

----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://www.med.kuleuven.be/biostat/
     http://www.student.kuleuven.be/~m0390867/dimitris.htm


----- Original Message ----- 
From: "Petr Pikal" <petr.pikal at precheza.cz>
To: <r-help at stat.math.ethz.ch>
Sent: Tuesday, January 31, 2006 2:56 PM
Subject: [R] vector with specified values construction


> Dear all
>
> I want to have vector of length 24 which is filled by zeroes except
> that on position
>
> c(8,16,19,20) is 2
> and
> c(3,4,12,24) is 4
> instead.
>
> I am able to do
>
>> (1:24)%in%c(8,16,19,20)*2
> [1] 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 2 0 0 2 2 0 0 0 0
>
> and
>
>> (1:24)%in%c(3,4,12,24)*4
> [1] 0 0 4 4 0 0 0 0 0 0 0 4 0 0 0 0 0 0 0 0 0 0 0 4
>
> but I can not find a suitable construction to end with vector
> 0 0 4 4 0 0 0 2 0 0 0 4 0 0 0 2 0 0 2 2 0 0 0 4
>
> Can anybody help please?
>
>
> Petr Pikal
> petr.pikal at precheza.cz
>
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