[R] delete rows whose sum is X

[Ivan Calandra]

Oops, forgot one "=":
mat[apply(mat, 1, FUN=function(x) sum(x)==5),]


Le 3/4/2011 15:36, Ivan Calandra a écrit :
> Hi Mikael
>
> You really need to provide a reproducible example in the future, it 
> will help people to better understand what you want to do and help 
> you, and help you better understand the answers as well.
>
> Try something like this:
> mat[apply(mat, 1, FUN=function(x) sum(x)=5),]
>
> HTH,
> Ivan
>
> Le 3/4/2011 14:50, purna a écrit :
>> Rnoob here.
>> I have a matrix of zeroes ond ones. I want to delete the rows whose 
>> sum of
>> values is not =5, alternatively extract the rows who sum up to 5.
>>
>> Thank you/Mikael
>>
>> -- 
>> View this message in context: 
>> http://r.789695.n4.nabble.com/delete-rows-whose-sum-is-X-tp3335254p3335254.html
>> Sent from the R help mailing list archive at Nabble.com.
>>
>> ______________________________________________
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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.
>>
>

-- 
Ivan CALANDRA
PhD Student
University of Hamburg
Biozentrum Grindel und Zoologisches Museum
Abt. Säugetiere
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+49(0)40 42838 6231
ivan.calandra at uni-hamburg.de

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