Could you please tell me what is the function or method to get count of
elements in all the columns in a matrix ?
for eg :-
ABC XYZ PQR
------ ----- ------
2 3 4
4 5
5 4 3
2
Result will be like
ABC XYZ PQR
------ ----- ------
2 4 3
Could you please help me ?
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It depends: what's in those "empty" space? Some combination of apply() and something else, depending on what your matrix *actually* looks like, and here dput() would be vastly preferable to copy and paste of something that didn't even come from an R session. The something else might involve length() or is.na() or, well, other possibilities but my telepathy is on the fritz today. Sarah On Tue, Jul 10, 2012 at 8:31 AM, Rantony <antony.akkara at ge.com> wrote:> Could you please tell me what is the function or method to get count of > elements in all the columns in a matrix ? > > for eg :- > > ABC XYZ PQR > ------ ----- ------ > 2 3 4 > 4 5 > 5 4 3 > 2 > > Result will be like > ABC XYZ PQR > ------ ----- ------ > 2 4 3 > > Could you please help me ? >-- Sarah Goslee http://www.functionaldiversity.org
Hi, Try this: list1<-list(ABC=c(2,5),XYZ=c(3,4,4,2),PQR=c(4,5,3))> lapply(list1,function(x) length(x))$ABC [1] 2 $XYZ [1] 4 $PQR [1] 3 ?list2<-lapply(list1,function(x) length(x)) ?dat2<-data.frame(list2) ?dat2 ? ABC XYZ PQR 1?? 2?? 4?? 3 A.K. ----- Original Message ----- From: Rantony <antony.akkara at ge.com> To: r-help at r-project.org Cc: Sent: Tuesday, July 10, 2012 8:31 AM Subject: [R] Count of elements in coulmns of a matrix Could you please tell me what is the function or method to get count of elements in all the columns in a matrix ? for eg :- ABC? ? ? XYZ? ? PQR ------? ? ? -----? ? ------ 2? ? ? ? ? ? 3? ? ? ? ? ? 4 ? ? ? ? ? ? ? 4? ? ? ? ? 5 5? ? ? ? ? ? 4? ? ? ? ? 3 ? ? ? ? ? ? ? 2 Result will be like ABC? ? ? XYZ? ? PQR ------? ? ? -----? ? ------ 2? ? ? ? ? ? 4? ? ? ? ? ? 3 Could you please help me ? -- View this message in context: http://r.789695.n4.nabble.com/Count-of-elements-in-coulmns-of-a-matrix-tp4635979.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.