[R] replacing values in Array

[Gerrit Eichner]

Hello, "uday",

e.g.,

(data - 1) %/% 3 + 1

would do the job in your very specific situation, but take a look at

?findInterval

for possibly more interesting (because more general) solutions.

Hth  --  Gerrit

On Tue, 13 Mar 2012, uday wrote:

> I want to replace some values in my Array
> e.g
> data<- c(1,2,3,4,5,6,7,8,9,10,11,12)
> I would like to replace 1,2,3 by 1 , 4,5,6 by 2, 7,8,9 by 3 and 10,11,12 by
> 4
> I am expecting out put
> data<- 1 1 1  2 2 2 3 3 3 4 4 4
>
> I have tried replace function
> replace(data, (data==1 |data==2| data==3),1)
> replace(data, (data==4|data==5| data==6),2)
> replace(data, (data==7|data==8| data==9),3)
> replace(data, (data==10 |data==11| data==12),4)
> but it changes only for individual operation it does not apply to whole
> array.
> So how I should replace values of whole array ?
>
>
>
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