R help - Jun 2006 - simple index question

I want to get index number of 0s, like

x <- c(1, 2, 0, 3, 0, 4)

I want an output of

3, 5

Thank you.

	[[alternative HTML version deleted]]

On Thu, 2006-06-01 at 11:06 -0400, Mu Tian wrote:
> I want to get index number of 0s, like
> 
> x <- c(1, 2, 0, 3, 0, 4)
> 
> I want an output of
> 
> 3, 5
> 
> Thank you.
See ?which
> which(x == 0)
[1] 3 5


HTH,

Marc Schwartz

try:

which(x == 0)

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://med.kuleuven.be/biostat/
     http://www.student.kuleuven.be/~m0390867/dimitris.htm


----- Original Message ----- 
From: "Mu Tian" <muster at gmail.com>
To: "R-Help" <r-help at stat.math.ethz.ch>
Sent: Thursday, June 01, 2006 5:06 PM
Subject: [R] simple index question

>I want to get index number of 0s, like
>
> x <- c(1, 2, 0, 3, 0, 4)
>
> I want an output of
>
> 3, 5
>
> Thank you.
>
> [[alternative HTML version deleted]]
>
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