CH,
  How about any:

any("Tiger" == animal)

  The function which will tell you the index if any match

which("Tiger" == animal.

  You should also look at the match funciton.

Dave



From:
"C.H." <chainsawtiney@gmail.com>
To:
R-help <r-help@r-project.org>
Date:
12/13/2010 08:50 AM
Subject:
[R] check for item in vector
Sent by:
r-help-bounces@r-project.org



Dear R users,

Suppose I have an vector like this:

animal <- c("Tiger","Panda")

I would like to know is there any function that check for the
existence of certain item in a vector.

e.g.

> func("Tiger",animal) # check for the existence of "Tiger"
TRUE
> func("Acacia",animal)  #Acacia is not an item of the animal vector
FALSE

I know that it can be done by for loop. But I would like to know is
there any built-in function for that.

Thank you very much.

CH

-- 
CH Chan

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