Thankyou very much Arun,it has even been simplified.. Eliza > Date: Sun, 19 May 2013 14:49:43 -0700 > From: smartpink...@yahoo.com > Subject: Re: [R] coping zeros from matrix to another > To: eliza_bo...@hotmail.com > > #or > just > B[A==0]<-0 > > > > > ----- Original Message ----- > From: arun <smartpink...@yahoo.com> > To: eliza botto <eliza_bo...@hotmail.com> > Cc: R help <r-help@r-project.org> > Sent: Sunday, May 19, 2013 5:48 PM > Subject: Re: [R] coping zeros from matrix to another > > May be this helps: > > set.seed(28) > mat1<- matrix(sample(0:50,20,replace=TRUE),nrow=5) > A<- dist(mat1) > A[2:4]<- 0 > set.seed(35) > mat2<- matrix(sample(1:50,20,replace=TRUE),nrow=5) > B<- dist(mat2) > B[which(A==0)]<-0 > B > # 1 2 3 4 > #2 49.07138 > #3 0.00000 28.19574 > #4 0.00000 55.70458 33.25658 > #5 0.00000 41.97618 31.35283 24.55606 > A.K. > > > ----- Original Message ----- > From: eliza botto <eliza_bo...@hotmail.com> > To: "r-help@r-project.org" <r-help@r-project.org> > Cc: > Sent: Sunday, May 19, 2013 5:05 PM > Subject: [R] coping zeros from matrix to another > > Dear useRs,i have two distance matrices A and B. The distances in A are > linked with distances in B. What i want to do is the following...There are > some points in A where distances are zero(those points are apart from usual > diagonal of zero values).Whereas, in B the distances at those points are not > necessarily zeros . i want "0" at those points in B where distance in A is > zero. How can i do that??i hope my question is clearthanks indeed in > advance,Eliza > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@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. > [[alternative HTML version deleted]]
______________________________________________ R-help@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.
