(Assuming I get your meaning) Sounds like a homework exercise ... The perhaps simplest way to do this is directly with a loop and indexing. Did you think about this at all, as this seem fairly obvious to me.
As an exercise for the reader, it can also be (very simply) done by vectorizing the calculation, at the cost of greater memory usage. Sorry, no further hints. -- Bert On Wed, Nov 16, 2011 at 1:24 PM, Eli Cohen <rfur...@gmail.com> wrote: > Say I have two matrixes: one is 8x28 and other 8x8 > > I'd like to multiply, for example, first and second column from the 8x8 and > plant them in first column of 8x28. > > Then take first and third of 8x8 and plant into second column of 8x28.etc. > > > > Any ideas? > > > > Thanks! > > > [[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. > -- Bert Gunter Genentech Nonclinical Biostatistics Internal Contact Info: Phone: 467-7374 Website: http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm ______________________________________________ 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.
