[R] which function

[arnaud Gaboury]

The correct line is :

> l[(which(100420==l)-1):which(100420==l)]
[1] "100419" "100420"




> -----Original Message-----
> From: arnaud Gaboury [mailto:arnaud.gaboury at gmail.com]
> Sent: Wednesday, June 02, 2010 9:41 AM
> To: r-help at r-project.org
> Cc: 'arnaud Gaboury'
> Subject: which function
> 
> 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