[R] count data with some conditions

[David Winsemius]

Do you want the count of remaining  elements which are strictly  
greater than the first element?

 > length(which(a[1] < a[2:10]))
[1] 4

or perhaps a bit more deviously:

 > sum( a[1]<a[2:10]+0 ) #adding 0 to TRUE or FALSE creates 1 or 0.
[1] 4

-- 
David Winsemius, MD
Heritage Labs.

On Oct 31, 2008, at 7:56 PM, sandsky wrote:

>
> Hi there,
>
> I have a data set:
>
> a=cbind(5,2,4,7,8,3,4,11,1,20)
>
> I want to count # of data, satistfying a[1]<a[2:10].
>
> Anyone helps me solving this case?
>
> Thank you in advance,
>
>
> Jin
> -- 
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