Hi all, I'm learning R. I'm used to Matlab and am having the following issue:
I define a column vector and matrix and then multiply them. The result is not what I expect: v2 <- c(0,1,0) M <- cbind(c(1,4,7),c(2,5,8),c(3,6,9)) M*v2 [,1] [,2] [,3] [1,] 0 0 0 [2,] 4 5 6 [3,] 0 0 0 I expect the result to be a column, specifically the 2nd column of M. Now I want to left multiply the matrix by a row vector, and I get errors: t(v2)*M Error in t(v2) * M : non-conformable arrays > V2 <- t(v2) > V2*M Error in V2 * M : non-conformable arrays I would expect to get the 2nd row of M as an output. Why am I not getting a column for the first case? Why is the second case causing errors? Any help would be greatly appreciated. I can get the -- View this message in context: http://r.789695.n4.nabble.com/row-matrix-tp3724023p3724023.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.