[R] Matrix Integral

Hi, Any help on this would be appreciated: I need to integrate where K is a 4x4 matrix, and SIGMA is a 4x4 matrix from say a to b, i.e. 0 to 5: integral MatrixExp(-K * s) %*% SIGMA %*% t(SIGMA) %*% MatrixExp(t(-K) s) ds t is tranpose , %*% : matrix mult , MatrixExp : matrix exponential I've

[R] Sending an alert / email when R finished?

Hi, Not sure if this is the best section to post it in. I'm doing lengthy runs on a 30GB data set - I would like to know if it is possible through any means for R to send an email / text message or anything when it has finished running a source file. Any suggestions would be appreciated. Nick.