Re: [R] Multivariate skew-t cdf

2006-06-06 Thread Konrad Banachewicz
Thanks to Spencer Graves for provinding this clarification about pmst. As the author of pmst, I was really the one expected to answer the query, but I was on travel in the last two weeks and did not read this query. As a complement to what already explained, the reason of the sharp change

Re: [R] Multivariate skew-t cdf

2006-06-05 Thread Spencer Graves
You want to evaluate skewed t probabilities in how many dimensions? If 27 is your maximum, the problem won't be as difficult as if 27 is your minimum. Also, do you want to compute the multivariate cumulative probability function for arbitrary points, location, covariance, shape and

Re: [R] Multivariate skew-t cdf

2006-06-05 Thread Adelchi Azzalini
On Mon, Jun 05, 2006 at 09:43:24AM -0700, Spencer Graves wrote: Thanks to Spencer Graves for provinding this clarification about pmst. As the author of pmst, I was really the one expected to answer the query, but I was on travel in the last two weeks and did not read this query. As a

[R] Multivariate skew-t cdf

2006-06-02 Thread Konrad Banachewicz
Dear All, I am using the pmst function from the sn package (version 0.4-0). After inserting the example from the help page, I get non-trivial answers, so everything is fine. However, when I try to extend it to higher dimension: xi - alpha - x - rep(0,27) Omega - diag(0,27) p1 - pmst(x, xi, Omega,