[R] Matrix manipulation

Dimitris Rizopoulos dimitris.rizopoulos at med.kuleuven.be
Mon Apr 16 15:16:01 CEST 2007

It would be helpful if you could be more specific of what exactly 
you'd like to compute. Have a look also at the posting guide available 



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/

----- Original Message ----- 
From: "Markku Karhunen" <markku.karhunen at ktl.fi>
To: <r-help at stat.math.ethz.ch>
Sent: Monday, April 16, 2007 2:52 PM
Subject: [R] Matrix manipulation

> Hi,
> This is a very basic question, but apparently I am too stupid for 
> it.
> I have a large matrix A, and I need to avoid for loops. How could I
> apply a function f(a,r,c) on each element of A, using the subscript 
> (row
> and column) of a as the other arguments?
> Thanks in advance,
> Markku Karhunen
> National Public Health Institute,
> Finland
> ______________________________________________
> 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.html
> and provide commented, minimal, self-contained, reproducible code.

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