Re: [R] Locate first index

[Spencer Graves]

Have you considered "which", as in the following: 
> a <- rep(1:2, 2)
> a
[1] 1 2 1 2
> which(a==1)
[1] 1 3
> which(a==1)[1]
[1] 1

hope this helps.  spencer graves

Cezar Augusto de Freitas Anselmo wrote:

Hi, all. I'd like to know if exists a manner to get the first index where
a condition is attained in a vector. For example,
There is a better solution than 

first.index <- table(subject[corretor==27])[1]

(give me the subject for the first time that corretor is 27)?

Thanks,

========================================
Cezar Freitas (ICQ 109128967)
IMECC - UNICAMP
Campinas, SP - Brasil
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