[R] How to specify covariance matrix in copula?

[Jiao Yang]

I want to use copula package in R to generate random vector of multivariate F distribution with a pre-specified diagonal covariance matrix, say, diag(2, 3, 0, 0, 0).   Can someone tell me how I can specify the diagonal covariance matrix in the copula function "mvdc"?  Thank you very much.