[R] count data with some conditions

[sandsky]

David,

Yes, it is what I want. It is a great help. Thank you,

Jin


David Winsemius wrote:
> 
> 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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>>
>> ______________________________________________
>> R-help at r-project.org mailing list
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>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
> 
> 

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