Re: [R] elegant way to minus on each row of a matrix

From: Dimitris Rizopoulos <Dimitris.Rizopoulos_at_med.kuleuven.be>
Date: Sun, 02 Mar 2008 18:56:15 +0100

try this:

mat <- matrix(1:9, 3, 3, TRUE)
dat <- as.data.frame(mat)
vec <- 1:3

result.mat <- mat - vec
result.dat <- dat - vec

result.mat
result.dat

I hope it helps.

Best,
Dimitris



Dimitris Rizopoulos
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


Quoting Bo Zhou <bozhou1981_at_hotmail.com>:

>
> How to do this in an elegant way formatrix/data frame/zoo?
>
> mat=
> 1 2 3
> 4 5 6
> 7 8 9
>
> vector=
> 1
> 2
> 3
>
>
> result=
> 0 1 2
> 2 3 4
> 4 5 6
>
> ie
> 1-1 2-1 3-1
> 4-2 5-2 6-2
> 7-3 8-3 9-3
>
> Thanks in advance.
>
> _________________________________________________________________
>
>
> 08
> [[alternative HTML version deleted]]
>
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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. Received on Sun 02 Mar 2008 - 17:59:11 GMT

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