do you mean the following:
test <- matrix(c(0.1, 0.2, 0.1, 0.2,
0.1, 0.1, 0.3, 0.1, 0.1), 3, 3)
ind <- rowSums(test <= 0.2) == nrow(test)
ind
which(ind)
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://med.kuleuven.be/biostat/
http://www.student.kuleuven.be/~m0390867/dimitris.htm
----- Original Message -----
From: "Ng Stanley" <[EMAIL PROTECTED]>
To: "r-help" <r-help@r-project.org>
Sent: Monday, February 11, 2008 11:22 AM
Subject: [R] Conditional rows
> Hi,
>
> Given a simple example, test <- matrix(c(0.1, 0.2, 0.1, 0.2, 0.1,
> 0.1, 0.3,
> 0.1, 0.1), 3, 3)
>
> How to generate row indexes for which their corresponding row values
> are
> less than or equal to 0.2 ? For this example, row 2 and 3 are the
> correct
> ones.
>
> Thanks
>
> [[alternative HTML version deleted]]
>
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
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