If I have two matrices: > a<-matrix(1:5,ncol=1)
[,1] [1,] 1 [2,] 2 [3,] 3 [4,] 4 [5,] 5 > b<-matrix(1:50,ncol=10) [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [1,] 1 6 11 16 21 26 31 36 41 46 [2,] 2 7 12 17 22 27 32 37 42 47 [3,] 3 8 13 18 23 28 33 38 43 48 [4,] 4 9 14 19 24 29 34 39 44 49 [5,] 5 10 15 20 25 30 35 40 45 50 How can I add a[1,1] to each column in the first row of b. and the then add a[2,1] to each column in second row of b and so on. I know there must be a way to use the apply function or nested for loops but I can't seem to get it working in R. thanks, michael [[alternative HTML version deleted]] ______________________________________________ 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