From: Pedro de Barros <pbarros_at_ualg.pt>

Date: Thu 21 Jul 2005 - 03:42:19 EST

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Thu Jul 21 03:45:47 2005

Date: Thu 21 Jul 2005 - 03:42:19 EST

Hi,

Se if this will solve your question (quick and dirty)... A is the first matrix, B is the second...

"F.CombineMat" <-

function (A, B)

{

ind<-rep(1:nrow(A),ceiling(nrow(B)/nrow(A)))
ind<-ind[1:nrow(B)]

A<-A[ind,]

colnames(A)<-paste('A', colnames(A), sep='')
R<-cbind(A,B)

R

}

Greetings,

Pedro

At 18:24 20/07/2005, you wrote:

>The latter, I want to replicate A enough times to have the same rows

*>as B. I realize that 16063 is not a mutliple 217, that doesn't really
**>matter for this problem
**>Assuming I change the colnames of one of them, how can I create a
**>matrix C that is the composite of the replicated A with B.
**>
**>thank you again.
**>
**>On 7/20/05, Pedro de Barros <pbarros@ualg.pt> wrote:
**> > Please clarify:
**> > Is there a column of common values that you want to use to merge the two
**> > matrices together? Or do you just want to replicate matrix A enough times
**> > to have the same number of rows as B? I could think this was the case, but
**> > 16063 is not a multiple of 217.
**> > Anyway, you will have to change the colnames of at least one of them.
**> >
**> > Pedro
**> > At 18:03 20/07/2005, you wrote:
**> > >Can someone please refer me to a function or method that resolves this
**> > >structuring issue:
**> > >
**> > >I have two matrices with identical colnames (89), but varying number
**> > >of observations:
**> > >
**> > >matrix A matrix B
**> > >
**> > >217 x 89 16063 x 89
**> > >
**> > >I want to creat one matrix C that has both matrices adjacent to one
**> > >another, where matrix A is duplicated many times to create the same
**> > >row number for matrix B, i.e. 16063.
**> > >
**> > >matrixA matrix B
**> > >matrixA
**> > >matrixA
**> > >
**> > >so matrix C will be 16063 x 178
**> > >
**> > >I've tried cbind() and merge() with no success..
**> > >
**> > >______________________________________________
**> > >R-help@stat.math.ethz.ch mailing list
**> > >https://stat.ethz.ch/mailman/listinfo/r-help
**> > >PLEASE do read the posting guide!
**> http://www.R-project.org/posting-guide.html
**> >
**> >
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R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Thu Jul 21 03:45:47 2005

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