[R] Non-central distributions
Peter Dalgaard BSA
p.dalgaard at biostat.ku.dk
Thu Oct 17 17:48:48 CEST 2002
(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.)
--
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
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