Re: [R] Multiple Vector with matrix in R

2012-11-16 Thread David Winsemius
On Nov 16, 2012, at 8:34 AM, frespider wrote: > Hi > > Can someone show me an easy way to multiple a weighted vector with an > matrix? > > example below > mat1<-matrix(sample(1:100,80,replace=TRUE),ncol=8) > w <- 1/1:10 > > I want the first element in w to be multiplied by the first row of mat

Re: [R] Multiple Vector with matrix in R

2012-11-16 Thread arun
ent: Friday, November 16, 2012 2:45 PM Subject: Re: [R] Multiple Vector with matrix in R Hello, Try the following. t(sapply(seq_along(w), function(i) mat1[i,]*w[i])) Hope this helps, Rui Barradas Em 16-11-2012 16:34, frespider escreveu: > Hi > > Can someone show me an easy way to multip

Re: [R] Multiple Vector with matrix in R

2012-11-16 Thread Rui Barradas
Hello, Try the following. t(sapply(seq_along(w), function(i) mat1[i,]*w[i])) Hope this helps, Rui Barradas Em 16-11-2012 16:34, frespider escreveu: Hi Can someone show me an easy way to multiple a weighted vector with an matrix? example below mat1<-matrix(sample(1:100,80,replace=TRUE),ncol=

Re: [R] Multiple Vector with matrix in R

2012-11-16 Thread frespider
Hi No i didn't get error it executed too fast, I had question about the Sum squares in the weighted least square if u can help me I would I appreciated Thanks Date: Fri, 16 Nov 2012 09:46:59 -0800 From: ml-node+s789695n4649775...@n4.nabble.com To: frespi...@hotmail.com Subject: Re: Multiple

Re: [R] Multiple Vector with matrix in R

2012-11-16 Thread frespider
Hi A.K Here is the error I get when I use %*% > dim(X) [1] 71142 219 > length(Weights) [1] 71142 > Wx<-diag(Weights)%*%X Error in array(0, c(n, p)) : 'dim' specifies too large an array That is why I asked for different and faster method -- View this message in context: http://r.789695.n4.na