Symmetric matrix

Megh Dal

Sun, Sep 21, 2008 10:47 AM

I have following matrix :

a = matrix(rnorm(36), 6)

Now I want to replace the lower-triangular elements with it's upper-triangular elements. That is I want to make a symmetric matrix from a. I have tried with lower.tri() and upper.tri() function, but got desired result. Can anyone please tell me how to do that?

Thread (5 messages)

Megh Dal Symmetric matrix Sep 21 Jorge Ivan Velez Symmetric matrix Sep 21 Dimitris Rizopoulos Symmetric matrix Sep 21 Peter Dalgaard Symmetric matrix Sep 21 Martin Maechler Symmetric matrix Sep 22