[R] Repeated values

Chuck Cleland ccleland at optonline.net
Wed Mar 11 10:19:29 CET 2009


On 3/11/2009 5:08 AM, Tammy Ma wrote:
> Hi,All.
> 
> How to make a program to delete repeated value?
> 
> a example
> 
>> c
>  [1] 4 3 0 3 4 1 0 1 4 4 3 4 3 4
> 
> I want to get : 4 3 0 3 4 1 0 1 4 3 4 3 4
> 
> two 4 is being represented by one 4.

x <- c(4, 3, 0, 3, 4, 1, 0, 1, 4, 4, 3, 4, 3, 4)

rle(x)$values
 [1] 4 3 0 3 4 1 0 1 4 3 4 3 4

?rle

> Thanks.
> 
> Tammy
> 
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Chuck Cleland, Ph.D.
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