[R] which function

[mohamed.lajnef at inserm.fr]

Hi Arnaud
Try this

l[((which(100420==l))-1):which(100420==l)]

Regards
Mo


arnaud Gaboury <arnaud.gaboury at gmail.com> a écrit :

> Dear group,
>
> Here is a list of elements :
>
>
> l <-
> c("100415", "100416", "100419", "100420", "100421", "100422",
> "100423", "100426", "100427", "100428", "100429", "100430", "100503",
> "100504", "100505", "100506", "100507", "100510", "100511", "100512",
> "100513", "100514", "100517", "100518", "100519", "100520", "100521",
> "100524", "100525", "100526", "100527", "100528", "100531")
>
>
>> l[3:4]
> [1] "100419" "100420"  #result is fine
>
>
>> l[(which(100420==l))-1:which(100420==l)]
> [1] "100419" "100416" "100415"      #can't understand why I do not have same
> result than the above line
>
>
> Thank You for help
>
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