Non-central distributions
Thanks, Peter! (Must try to give this some thought ...). Anyway, in this respect R is still ahead of S-Plus, which doesn't seem to carry ANY non-centrality as standard! (Except possibly obscurely tucked away in some add-on library). Ted.
On 17-Oct-02 Peter Dalgaard BSA wrote:
(Ted Harding) <Ted.Harding at nessie.mcc.ac.uk> writes:
only the CDF functions 'pt' and 'pf' allow this parameter to be set. (If you try in the others, you get the message "unused argument(s) (ncp ...)"). Why is this? Being able to set it would be just as useful ...
We don't have any references on how to calculate them! (Except for the brute-force approaches of numeric differentiation, root finding, and transformation of uniform distributions.)
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