[R] modifying arrays within functions

[john seers (IFR)]

Hi KB


I am not sure exactly what you want to do but perhaps this is this
closer to what you need:

addition<-function(X, a){Xnew<-X + a}
X<-array(1,dim=c(2,2))
a<-2
Xa<-addition(X,a) 
Xa

Regards

JS


 
---
-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Konrad BLOCHER
Sent: 05 February 2008 15:52
To: r-help at r-project.org
Subject: [R] modifying arrays within functions


Hi,

I'm pretty new to R and seem to be having difficulties with writing a
function that would change an array and keep the change after the
function finishes its work.

in other words

I have an array of 1's    X<-array(1,dim=c(2,2))

I want to add a number to X[1,1] by means of a function called addition.
What I am writing is:   addition<-function(a){X[1,1]=X[1,1}+a}
but it doesn't seem to work

Any ideas? Please? :)

Thanks

KB

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