> the exponent of asymmetric matrix makes me very curious. > can anyone please explain to me "what will happen if we apply exponent to > the asymmetric matrix"?
The gates of Hell will open, the world will come to an end, and we will all perish in a firestorm :) Sorry, couldn't resist. Exponentiating a non-symmetric (or anti-symmetric) matrix is no different from exponentiating a symmetric matrix. For example the matrix T = cbind(c(0, 1), c(-1, 0)), i.e. [,1] [,2] [1,] 0 -1 [2,] 1 0 generates rotations in the xy plane, that is exp(alpha * T) is the rotation matrix in the xy plane by angle alpha. Peter ______________________________________________ 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.