[R] delete rows whose sum is X

Ivan Calandra
Fri, 04 Mar 2011 14:41:55 -0000

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


Le 3/4/2011 15:36, Ivan Calandra a ?crit :
> 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 ?crit :
>> 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.
>>
>> ______________________________________________
>> 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.
>>
>

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

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