[R] counting the number of ones in a vector

[Tobias Verbeke]

Nutter, Benjamin wrote:
> What you did works well.  You could also try the following.
> 
> table(x)["1"]

or

sum(x==1)

HTH,
Tobias

> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
> On Behalf Of Randall Wrong
> Sent: Friday, February 26, 2010 9:41 AM
> To: r-help at r-project.org
> Subject: [R] counting the number of ones in a vector
> 
> Dear R users,
> 
> I want to count the number of ones in a vector x.
> 
> That's what I did : length( x[x==1] )
> 
> Is that a good solution ?
> Thank you very much,
> Randall
> 
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