Thanks a lot! This works.
Now I want to do the opposite
let's say that I have one sequence 
for example 
check in image 
http://imageshack.us/photo/my-images/4/unleduso.png/
column A (this is a seq(1,113,4)
and I want when I get the number 9 to say that this is the third number in the seq (1,113,4). everything about the seq(1,113,4) is known and I want when I get one of the number of the sequence to say which is its order.
How I can do that?
B.R
A;ex


________________________________
From: William Dunlap <wdunlap@tibco.com>

Sent: Friday, September 30, 2011 6:34 PM
Subject: RE: [R] is member

  is.element(myvector, seq(1,800,4))
or, if you like typing percent signs,
  myvector %in% seq(1,800,4)

Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com 

> -----Original Message-----
> From: r-help-bounces@r-project.org [mailto:r-help-bounces@r-project.org] On Behalf Of Alaios
> Sent: Friday, September 30, 2011 9:26 AM
> To: R-help@r-project.org
> Subject: [R] is member
> 
> Dear all,
> I have a vector with number that some of them are part of the
> 
> seq(1,800,4). How can I check which of the numbers belong to the seq(1,800,4)
> 
> LEt's say that is called myvector the vector with the numbers.
> Is there in R something like this?
> is.member(myvector,seq(1,800,4))
> 
> I would like to thank you in advance for your help
> 
> B.R
> Alex
>     [[alternative HTML version deleted]]
	[[alternative HTML version deleted]]

