R help - Jul 2009 - Finding missing elements by comparing vectors

Hi,

 

Is there a function in R to do a-b where a and b are two non-numeric sets
(or intersection complement of these two sets).

 

Kind Regards,

 

Praveen.

 


	[[alternative HTML version deleted]]

> Is there a function in R to do a-b where a and b are two non-numeric  
> sets
> (or intersection complement of these two sets).
I think you're looking for "setdiff"

-steve

--
Steve Lianoglou
Graduate Student: Physiology, Biophysics and Systems Biology
Weill Medical College of Cornell University

Contact Info: http://cbio.mskcc.org/~lianos/contact

Or...
> X = c ("red", "blue", "green",
"black" ) ;  Y = c("red", "blue",
"green", "magenta",
"cyan")
> unique ( c ( X [X %in% Y] , Y [Y %in% X] ) )
[1] "red"   "blue" 
"green"
>  
David 

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Praveen Surendran
Sent: Thursday, July 16, 2009 11:42 AM
To: r-help at r-project.org
Subject: [R] Finding missing elements by comparing vectors

Hi,

 

Is there a function in R to do a-b where a and b are two non-numeric
sets
(or intersection complement of these two sets).

 

Kind Regards,

 

Praveen.

 


	[[alternative HTML version deleted]]

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