Hi All, I am wondering if there is an efficient way to do the following matrix multiplication, a[1,,] 1, 2 3, 4
a[2,,] 4, 3 2, 1 b[1,,] 5,6 7,8 b[2,,] 8,7 6,5 I need the result c, with c[1,,] = a[1,,] %*% b[1,,] c[2,,] = a[2,,] %*% b[2,,] Thanks in advance for any help. ______________________________________________ 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 and provide commented, minimal, self-contained, reproducible code.