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----- Message d'origine ----
De : "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
à : sigalit mangut-leiba <[EMAIL PROTECTED]>
Cc : r-help <[EMAIL PROTECTED]>
Envoyé le : Vendredi, 2 Novembre 2007, 22h33mn 52s
Objet : Re: [R] writing a categorical var. with condition
On 02-Nov-07 21:02:57, sigalit mangut-leiba wrote:
> Hello,
> I want to create a new variable which includes 4 age categories
> in this way:
> if (age>=12 && age<32) age1==1
> if (age>=32 && age<52) age1==2
> if (age>=52 && age<72) age1==3
> if (age>=72 && age<100) age1==4
>
> but I get the results only for the first observation.
>
> how can I apply this condition to all observations?
If A is a vector of ages, one way to do it would be
age1 <- 1*(A>=12)&(A<32) + 2*(A>=32)&(A<52) +
3*(A>=52)&(A<72) + 4*(A>=72)&(A<100)
Best wishes,
Ted.
--------------------------------------------------------------------
E-Mail: (Ted Harding) <[EMAIL PROTECTED]>
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Date: 02-Nov-07 Time: 22:33:48
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