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
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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> PLEASE do read the posting guide!
> http://www.R-project.org/posting-guide.html
>
Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm
Thanks to all who responded. I definitly need some fresh air to clean my head. :-) Petr On 31 Jan 2006 at 14:56, Petr Pikal wrote: From: "Petr Pikal" <petr.pikal at precheza.cz> To: r-help at stat.math.ethz.ch Date sent: Tue, 31 Jan 2006 14:56:47 +0100 Priority: normal 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 > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.htmlPetr Pikal petr.pikal at precheza.cz