[R] Remove a number from a vector

[Berend Hasselman]

On 11-05-2012, at 12:45, dkkhireche wrote:

> Example :
> *x=c("abba","bobo","cocoa")*
> In order to remove "bobo" from *x* you need to do the following:
> *x=x[which(x=="bobo")]*
> 

No. That does the opposite of what you describe.
You do

x <- x[-which(x=="bobo")]

or better

x <- x[which(x!="bobo")]

Berend


> In case you already know the index of the element you want to get rid of, it
> is even easier
> *x=x[-elem.index]*
> 
> Good luck
> 
> 
> 
> 
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