[R] Non-central distributions

[Peter Dalgaard BSA]

(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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